Precision Grenadier System Prototype Project Opportunity (PPON)

Forms / Attachments / Pricing Sheets

This document contains a collection of technical drawings and assembly instructions for various components of a mount system. It details the specifications, dimensions, materials, and assembly procedures for individual parts and subassemblies.

• Drawings: Detailed technical drawings for components such as "Accuracy Mount," "Knob, Modified," "Buffer," "Front Support Riser," "Assembly, Front Clamp Mechanism," "Clamp Base, Front," "Spacer, Front," "Assembly, Front Clamp Plate," "Assembly, Accuracy Mount," "Assembly, Weapon Sled," "Assembly, Back Stop," "Assembly, Rear Support," "Upright Support w/ Inserts," "Base Plate w/ Inserts," "Mounting Plate," "Assembly, Rear Clamp," "Assembly, Rear Clamp Mechanism," "Clamp Base w/ Inserts," "Base Plate," "Spacer, Rear," "Threaded Rod," "Bushing, Threaded," "Buffer Plate," "Assembly, Mount Base," "Subassembly 2: Front & Rear Legs," "Subassembly 3: Upper Arm," "Subassembly 4: Front Cup," "Subassembly 5: Rear Cup."
• Bill of Materials (BOM): Lists parts, quantities, descriptions, and sizes for various assemblies.
• Material Specifications: Details materials such as aluminum alloys, steel, bronze, and polyurethane rubber, along with their respective standards and properties.
• Dimensional Data: Provides precise measurements, tolerances, and surface finish requirements for each part.
• Assembly Instructions: Includes notes on thread locking, fastener tightening, and specific assembly steps.

This document is crucial for bidders as it provides the complete technical specifications and manufacturing details for all components of the mount system. Understanding these drawings is essential for accurate bidding, manufacturing, quality control, and ensuring compatibility with the overall system. It outlines the exact requirements for each part, including materials, dimensions, and tolerances, which directly impact the cost and feasibility of production.

Form / Attachment / Pricing Sheet

This document, "Attachment 3 - Delivery Schedule," outlines the specific deliverables, quantities, and associated timelines required for the opportunity. It serves as a critical reference for bidders to understand the schedule and scope of work.

• Statement of Work (SOW) Reference: Links specific tasks and activities to delivery requirements.
• Deliverables: Details various items including Program Start-up Activities, Prototype Test Deliveries (Weapons, Ammunition, Fire Control, Magazines), Government Prototype Test Support, Design Finalization Activities, Prototype Test Post Activities, and Other Data Deliverables.
• Quantities: Specifies the number of units for each deliverable (e.g., number of weapons, rounds of ammunition, fire control systems, magazines).
• Timeline: Provides due dates or timeframes for each deliverable, often referenced as "days prior to PT" (Prototype Test) or "days after award/PT end."

This schedule is essential for bidders to:

• Accurately estimate resource allocation and production timelines.
• Understand the sequencing of activities and key milestones.
• Ensure their proposal aligns with the government's expected delivery dates and quantities.
• Identify specific reporting and documentation requirements with their deadlines.

Form / Attachment / Pricing Sheet

This document is a Special License Agreement (SLA) for Precision Grenadier System-Ammunition (PGS-Ammunition). It outlines the terms under which the U.S. Government is granted rights to "Data" related to the PGS-Ammunition, submitted by a "LICENSOR" in response to a Prototype Project Opportunity Notice (PPON).

• Definitions: Clarifies terms such as "Data," "Government Purpose," "Limited Rights," "Restricted Rights," and "Unlimited Rights" as they pertain to the agreement.
• Grants and Covenants: Details the specific license rights granted to the Government, including "Government Purpose Rights" and "Unlimited Rights." It outlines conditions for these rights, such as ordered quantities and payment terms.
• Property Rights: Defines ownership and protection of intellectual property.
• Representations and Warranties: Outlines assurances provided by the LICENSOR regarding intellectual property rights and authority to grant licenses.
• Breach, Lapse, and Termination: Specifies procedures for handling breaches of the agreement by either party and conditions for termination.
• Protection of Data: Details requirements for marking technical data and handling export-controlled information.
• Appendices: References Appendix A (Patents/Applications) and Appendix B (Reps and Warranty Exclusions).

This SLA establishes the terms for the Government's use and rights to data associated with the PGS-Ammunition. Bidders should review the definitions of "Data," "Government Purpose Rights," and "Unlimited Rights" to understand the scope of data usage and intellectual property considerations relevant to this opportunity. The conditions for granting these rights, particularly regarding ordered quantities and payments, may also be pertinent.

Form / Attachment / Pricing Sheet

This document is a sample Special License Agreement (SLA) for the Precision Grenadier System – Fire Control (PGS-FC). It outlines the terms and conditions under which the U.S. Government is granted license rights to "Data" related to the PGS-FC, as submitted by the LICENSOR in response to a Prototype Project Opportunity Notice (PPON).

• Definitions: Clarifies terms such as "Data," "Effective Date," "Government Purpose," "Government Purpose Rights," "Limited Rights," "Restricted Rights," and "Unlimited Rights."
• License Grants: Details the specific rights granted to the Government, including Government Purpose Rights, Unlimited Rights (which become effective after a specified period), Limited Rights, and Restricted Rights.
• Property Rights: States that all licensed intellectual property rights are proprietary to the LICENSOR and remain with them. It also defines what information is not considered proprietary.
• Representations and Warranties: LICENSOR warrants that the Data does not infringe third-party rights and that they have the authority to grant the licenses.
• Breach and Termination: Outlines procedures for breach by either the Government or the LICENSOR, and conditions for termination.
• Protection of Data: Specifies how LICENSOR's Data should be marked and handled, including export control warnings.

This SLA defines the specific license rights the Government will have to the PGS-FC Data. Bidders should review this document to understand the scope of data rights, potential restrictions on use, modification, and disclosure, and any associated warranties or obligations. This is particularly relevant if the opportunity involves the development, modification, or use of the PGS-FC system or its associated data.

Form / Attachment / Pricing Sheet

This document outlines the security information requirements for contractors supporting the program. It details requirements for handling classified and unclassified information, including Controlled Unclassified Information (CUI), and specifies relevant security regulations and clauses.

• Security Classification Guide (SCG): References the PGS SCG and PGS FOA SCG for classification information.
• Controlled Unclassified Information (CUI): Outlines requirements for protecting CUI, including compliance with DoDI 5200.48 and DoDM 5400.07.
• NIST SP 800-171: Requires compliance with NIST SP 800-171, as mandated by DFARS clause 252.204-7012 and provision 252.204-2019. This includes obtaining adequate NIST SP 800-171 assessment scores and potentially providing system security plans.
• Classified Information: For contracts requiring access to classified information, compliance with FAR 52.204-2 and the National Industrial Security Program Operating Manual (DoD 5220.22-M) is necessary.
• Counterintelligence Awareness and Reporting (CIAR): Requires contractor personnel to complete CIAR training (CI116.16) and submit certificates.
• Critical Program Information (CPI): Addresses the protection of CPI as defined by government guidance and potential Implementation Program Protection Plans (IPPP).
• Antiterrorism (AT): Mandates AT Level 1 awareness training for all personnel requiring access to government installations, with initial and annual certificate submissions.
• Information Security: Requires compliance with installation, facility, and area commander security policies, background checks, and personal identity verification (FAR clause 52.204-9).
• Operations Security (OPSEC): Requires Level I OPSEC Awareness training for contractor employees, with initial and annual certificate submissions.
• Information Assurance (IA): Requires completion of DoD IA awareness training for access to Government Information Systems, and compliance with DoD and Army training requirements (DoDD 8570.01, AR 25-2).
• FARs and Defense FARs (DFARs) Clauses: Lists key clauses including DFARS 252.204-7012 (CDI Safeguarding and Cyber Incident Reporting), DFARS 252.204-7000 (Disclosure of Information), DFARS 252.204-7008 (Compliance with Safeguarding CDI Controls), and DFARS 252.204-7009 (Limitations on Third-Party Contractor Cyber Incident Information).

This document is critical for bidders to understand the security protocols, training requirements, and compliance obligations related to handling sensitive information and accessing government systems. Failure to comply with these requirements could impact proposal evaluation and contract performance.

Form / Attachment / Pricing Sheet

This document, "Attachment 19 - Business Status Certification," is a form required for offerors responding to the solicitation. It is used to certify that the offeror meets specific business status conditions as required by 10 U.S.C. 2371b paragraph d, which are necessary for consideration for an award, particularly for prototype projects.

• Offeror Information: Requires legal name, address, POC name, title, email, phone, DUNS No., CAGE Code, proposed NAICS Code(s), and Industry Size Standard (Small, Large, or Foreign).
• Certification Conditions: Offerors must select one of four conditions to be considered for award:
  1. At least one nontraditional defense contractor or nonprofit research institution participating significantly in the prototype project.
  2. All significant participants are small businesses or nontraditional defense contractors.
  3. At least one-third of the total prototype project cost is paid from non-Federal Government sources.
  4. Agency determination of exceptional circumstances justifying innovative business arrangements.
• Required Actions: Depending on the selected condition, offerors may need to complete additional forms (e.g., Significant Participant Business Status Certification Parts A and B, Appendix A) or provide specific documentation (e.g., Army Senior Procurement Executive determination, Appendix B for Cost Share Requirements).
• Final Certification: A section for certifying the accuracy of the information provided, allowing for electronic signature.

This form is critical for bidders to determine their eligibility and to correctly document their business status in relation to the solicitation's requirements. Failure to complete this form accurately or meet the specified conditions may disqualify an offeror from award. It also directs bidders to other relevant appendices for further details on participant certifications and cost sharing requirements.

Solicitation / RFP / RFQ

This Prototype Project Opportunity Notice (PPON) seeks proposals for the development of up to two prototype Other Transaction Agreements (OTAs) for a Precision Grenadier System (PGS). The PGS is intended to address a capability gap for Counter Defilade Target Engagement (CDTE) out to 500 meters and for Counter-small Unmanned Aerial Systems (C-sUAS). The system will integrate a man-portable weapon, fire control, and a family of ammunition.

• Development of prototype PGS, including approximately 16 weapons, 28 fire controls, and 25,400 rounds of ammunition (mixture of Training Practice, Counter Defilade, Counter-sUAS, and Close Quarters Battle).

• Provision of spare parts, test barrels, tools/gauges/accessories, and engineering support.

• Development of Technical Data Packages (TDPs) for weapon, fire control, and ammunition.

• Program management, engineering support, and iterative prototyping efforts.

• Compliance with safety, environmental, and security requirements.

• Up to two competitive fixed-amount Other Transaction Agreements (OTAs).

• Estimated duration for each OTA is up to four years.

• Potential for follow-on production award(s) without further competition.

• Written proposals are due by 11 May 2026 at 1:00 PM EST.

• Proposals will be evaluated based on five factors: Concept Feasibility (most important), Proposed Threshold Requirements, Special License Agreements, Integrated Master Schedule, and Price (least important).

• Offerors may submit up to two proposals.

Offerors must meet one of the following conditions:

• At least one nontraditional defense contractor or nonprofit research institution participating significantly.

• All significant participants are small businesses or nontraditional defense contractors.

• At least one-third of the total cost is paid by non-Federal Government sources.

• Senior procurement executive determination for exceptional circumstances.

• Offerors must have a DUNS number and be registered in SAM.

• The PPON Issue Date is 01 April 2026.

• Further details on requirements, attachments, and evaluation criteria are provided within the document.

Form / Attachment / Pricing Sheet

This document contains detailed drawings and specifications for ammunition packaging and unitization. It includes drawings for various ammunition containers (e.g., M2A2, PA108, PA120) and detailed procedures for unitizing these containers onto pallets for shipping and storage.

• Drawings: Technical drawings with dimensions and specifications for ammunition boxes, containers, and pallet configurations.
• Unitization Procedures: Detailed instructions on how to assemble unit loads, including strapping, palletizing, and handling requirements.
• Material Specifications: Lists of materials and standards required for packaging and unitization (e.g., lumber, nails, steel strapping, seals).
• Revisions: A history of changes and updates to the documents.
• Pallet Unit Data: Tables listing National Stock Numbers (NSNs), hazard classifications, compatibility groups, and approximate weights for various palletized unit loads.

This document is crucial for bidders who are involved in the manufacturing, packaging, or transportation of ammunition. It provides the exact specifications and procedures required to ensure that ammunition is packaged and unitized in compliance with military standards, which is essential for safety, logistics, and contract fulfillment.

Form / Attachment / Pricing Sheet

This document is a Special License Agreement (SLA) for the Precision Grenadier System - Weapon (PGS-Weapon). It is a specially negotiated license agreement submitted by the LICENSOR in response to a Prototype Project Opportunity Notice (PPON).

• Defines "Data" as commercial or non-commercial computer software, software documentation, and technical data.
• Establishes "Government Purpose Rights," "Unlimited Rights," "Limited Rights," and "Restricted Rights" for the PGS-Weapon Data.
• Grants the Government non-exclusive, non-transferable, irrevocable, fully paid-up, royalty-free license for Government Purpose Rights upon ordering 3,000 PGS-Weapons.
• Specifies that the Government will have Unlimited Rights to the PGS-Weapon Data after a defined time period from the Effective Date.
• Outlines representations and warranties from the LICENSOR regarding intellectual property and the rights granted.
• Details provisions for breach, lapse, and termination of the agreement.
• Includes requirements for marking of data, distribution statements, and export control warnings.

This SLA defines the terms under which the Government can use, modify, reproduce, release, perform, display, or disclose data related to the PGS-Weapon. Bidders should review the specific rights granted (Government Purpose Rights, Unlimited Rights, Limited Rights, Restricted Rights) to understand the data usage limitations and obligations associated with the PGS-Weapon, particularly if their proposals involve or generate such data.

Other / Unclassified

This document is an "Other Transaction for Prototype Agreement" (OTA) between the U.S. Government (represented by Army Contracting Command – New Jersey) and a "Performer" (COMPANY NAME). It outlines the terms and conditions for a prototype project under 10 U.S.C. § 4022, specifically for the Precision Grenadier System (PGS). The agreement details the scope, term, management, payment, disputes, intellectual property rights (patent and data), foreign access to technology, property disposition, and various other legal and administrative clauses.

• Prototype Project: This is an Other Transaction Agreement (OTA) for a prototype project, not a traditional procurement contract. It is authorized under 10 U.S.C. § 4022.
• Scope: The agreement focuses on a prototype project for the Precision Grenadier System (PGS), based on the Performer's proposal.
• Potential for Follow-on Production: The agreement explicitly states that it may lead to a follow-on production contract or transaction without further competition if specific criteria are met (competitive selection, successful prototype completion, meeting key technical goals). The potential follow-on production is estimated at $255,531,000 for up to 11,000 weapons and 15,000,000 rounds of ammunition, spare parts, and engineering support.
• Key Terms: Bidders should pay close attention to:
  • Scope of Agreement (Article I): Details the prototype nature and iterative approach.
  • Term and Termination (Article II): Outlines agreement duration and conditions for termination.
  • Obligation and Payment (Article IV): Specifies payment milestones and limitations on Government liability.
  • Patent Rights (Article VI) & Data Rights (Article VII): Defines ownership and licensing of intellectual property and data generated.
  • Foreign Access to Technology (Article VIII): Addresses controls on technology transfer.
  • Cost Share (Article XVI): If applicable, outlines Performer's resource share requirements.
  • Cybersecurity & Safeguarding (Articles XVII & XVIII): Details requirements for protecting information systems and data.
• Administrative Requirements: Includes invoicing via WAWF (Supplement 1) and points of contact (Supplement 3).

Forms / Attachments / Pricing Sheets

This document is an "Attachment 10 - Available Maintenance Tools" which is a "Hand Receipts Report with Illustration." It details the components of an "ARMAMENT REPAIR SHOP SET VERSION II" by listing National Stock Numbers (NSNs), item descriptions, quantities, and other relevant information for each item within the set.

• National Stock Numbers (NSNs): A comprehensive list of NSNs for each tool and component.
• Item Descriptions: Detailed descriptions of each item, including specifications, dimensions, materials, and compliance standards (e.g., ASME B107.5M).
• Quantities: Information on the quantity of each item available.
• Illustrations: Visual representations of many of the tools and components are provided.
• Location: Some items specify their location within the set (e.g., "DRAWER J7").

This document serves as a detailed inventory of the tools and equipment included in the "ARMAMENT REPAIR SHOP SET VERSION II." Potential bidders can use this information to understand the scope and nature of the tools provided, which is crucial for assessing the completeness and suitability of the set for maintenance tasks. It helps in verifying the contents of the set and understanding the specific types and quantities of tools available for repair operations.

Form / Attachment / Pricing Sheet

This document is a Technical Data Package (TDP) Option Selection Worksheet used to specify the requirements for a TDP. It guides the contractor in selecting the appropriate TDP level, format, and associated data management products.

• TDP Level: Options include Conceptual, Developmental, or Product Level.
• Type and Format: Selection for 2D (Native CAD, ISO 32000 PDF, etc.) or 3D (Native 3D CAD, 3Di viewable, Neutral Format, etc.) formats.
• Associated Lists: Specifies requirements for Parts Lists, Data Lists, Index Lists, Wiring Lists, and Application Lists.
• TDP Data Management Products: Outlines requirements for Technical Data Package List (TDPL), Source Control Approval Request, Document Number Assignment Report, etc.
• Standards Applicability: Indicates which ASME standards (e.g., Y14.100, Y14.24, Y14.35, Y14.41, Y14.5) apply.

Bidders must use this worksheet to understand and document their TDP requirements. The selections made here will dictate the format, content, and delivery of technical data packages, directly impacting proposal preparation and contract execution. It clarifies the expected engineering data and documentation deliverables.

Form / Attachment / Pricing Sheet

This document, "Attachment 9 - Prototype Test Outline," details the proposed testing procedures and quantities of ammunition required for prototype testing of small arms and machine guns. It serves as a guide for the scope and scale of testing to be conducted.

• Subtests: Outlines numerous tests including, but not limited to, Parts Interchange, Zero Repeatability, Recoil, Kinematics, Reliability/Durability, Environmental (High/Low Temperature, Dust, Humidity, Rain, Immersion), and various Laser Rangefinder (LRF) and aiming laser capabilities.
• Ammunition Quantities: Specifies the number of rounds and types of ammunition (e.g., Training, Counter-Defilade, SUAS, Primed Cases) required for each subtest and weapon.
• Test Operations Procedure: References "Test Operations Procedure 03-2-045A Small Arms - Hand and Shoulder Weapons and Machine Guns" as the general guideline for test execution.
• Approximations: Notes that all tests, methods, and quantities are approximations and subject to change.

This attachment provides potential bidders with critical information regarding the extensive testing regimen planned for the prototype. It highlights the specific performance parameters that will be evaluated and the volume of ammunition that will be expended, offering insight into the expected durability, reliability, and operational capabilities of the system under various conditions. Bidders can use this information to understand the rigor of the testing phase and to inform their technical proposals and cost estimations.

Form / Attachment / Pricing Sheet

This document is a Technical Data Package (TDP) Option Selection Worksheet used to define the requirements for technical data packages. It guides the selection of TDP levels, formats, and associated data elements.

• TDP Level: Selection of Conceptual, Developmental, or Product Level.
• Type and Format: Specifies requirements for 2D drawings (CAD, PDF, hard copy) and 3D models (Native CAD, 3Di viewable, neutral format, derived 2D drawings). It notes that 2D or 3D format is acceptable and that if Native CAD is provided, STEP files are not required.
• Document Numbers: Options for contractor or government cage codes and document numbers.
• Drawing Formats: Choice between contractor or government format for drawing title blocks.
• TDP Elements: Selection of required engineering design data, associated lists, specifications, software documentation, and quality assurance provisions.
• Applicability of Standards: Selection of relevant ASME standards (Y14.100, Y14.24, Y14.34, Y14.35, Y14.41, Y14.5) or other applicable standards.
• Associated Lists: Options for integral or separate parts lists, data lists, index lists, wiring lists, and application lists.
• TDP Data Management Products: Options for Technical Data Package List (TDPL), Source Control Approval Request, Document Number Assignment Report, Proposed Critical Manufacturing Process Description, and Engineering Drawing Tree.
• TDP Metadata: Requirements for TDP metadata.
• TDP Supplementary Data: Requirements for supplementary data.
• Other Tailoring: Section for additional tailoring instructions, noting that interface control data should be in ISO 32000 PDF format, potentially supplemented with CAD.

This worksheet is critical for bidders to understand the specific technical data requirements for the contract. It dictates the format, level of detail, and standards for all engineering drawings, models, and associated documentation that will need to be delivered. Bidders must carefully review and complete this worksheet to ensure their proposals accurately reflect the government's expectations for technical data deliverables.

Form / Attachment / Pricing Sheet

This document, "Attachment 7 - User Acceptance," outlines the procedures and requirements for user acceptance testing of a weapon system, likely related to a "Soldier Touch Point (STP)" initiative. It details the process for participants to evaluate the weapon system and provide feedback.

• Participants Required: Up to 15 users per weapon type per vendor.
• Participant Qualifications: Must be recently qualified on baseline systems within 12 months.
• Hardware Provided: Participants may be outfitted with combat helmet, eye protection, gloves, hearing protection, body armor with plates, and ammunition.
• Ammunition Resources: Approximate ammunition quantities per vendor are provided in a table (e.g., TP Rounds, CQB Rounds, CD Rounds, CUAS Rounds).
• Procedure: Includes Overview and Training, Live-Fire Exercises (zeroing, usability tasks, range estimation, target acquisition, engagement from various postures and ranges), and Post Live-Firing Exercises (field stripping, maintenance, and survey questionnaire).
• Sample Questionnaire: A detailed questionnaire covering satisfaction with weapon control, recoil, trigger function, loading/unloading, form factor, target acquisition, combat movements, control manipulation, and overall mission support. It also includes an open-ended question for additional feedback.

This attachment is crucial for bidders offering weapon systems. It defines the user acceptance testing process, including the number of participants, their qualifications, the scope of testing (live-fire exercises, maintenance), and the specific feedback mechanisms (questionnaire). Bidders need to understand these requirements to prepare for and potentially support user acceptance testing of their systems. The ammunition quantities and the detailed questionnaire provide insight into the expected performance and user experience criteria.

Form / Attachment / Pricing Sheet

This document, "Attachment 6 - Operational Effectiveness," details the requirements and procedures for a "Soldier Touchpoint (STP) – Operational Effectiveness" event. It outlines the resources and activities necessary for testing and evaluating a capability.

• Participants: Up to 15 users.
• Hardware: Participants will be outfitted with combat helmet, eye protection, gloves, hearing protection, body armor with plates, and ammunition.
• Approximate Ammunition Resources (Per Vendor):
  • For 10 users: 54 TP Rounds, 54 CQB Rounds, 36 CD Rounds, 54 CUAS Rounds per user.
• Procedure:
  1. Initial overview and training of equipment, including New Equipment Training (NET) for the weapon system.
  2. Overview and training of procedures, including target types and engagement expectations.
  3. Range familiarization and dry-fire exercises.
  4. Weapon zeroing according to vendor-specific procedures.
  5. Live-fire engagement of targets at various ranges, defilade levels, and postures, potentially in day and night conditions.
  6. Recording of target acquisition and engagement data (metrics to be determined).

This attachment provides critical details for vendors regarding the scope of operational testing, including the number of participants, required hardware, ammunition quantities, and a step-by-step procedure for the event. Bidders should use this information to understand the logistical and resource requirements for supporting this operational effectiveness test.

Form / Attachment / Pricing Sheet

This document is an Excel spreadsheet labeled "Attachment 4 - Pricing" and is intended for bidders to provide pricing information for the opportunity. It contains line items for various efforts and prototype assets across different fiscal years.

• Line Items: Includes specific efforts (e.g., 4QFY26 - 1QFY27 Efforts, 2QFY27 - 3QFY27 Efforts) and various prototype assets (Weapons, Fire Controls, Ammunition types).
• Quantities: Specifies the quantity for each line item.
• Price & Total Price: Fields for bidders to enter unit prices and calculate total prices. All initial price fields are set to 0.0.
• Lead Time: A column for lead time information.
• Quantity Delivered Per Month: A column for monthly delivery quantities.
• Notes: Includes specific instructions such as "Fill in only the green cells," "Single Order," and "May be ordered multiple times."
• Fiscal Year Breakdown: Pricing is broken down by fiscal year for prototype assets (FY28, FY29, FY30).
• Assumptions: Notes that the pricing assumes a 4QFY26 award.
• Cost Share: Includes a field for "Proposed Cost Share (if applicable)" with a note that it will not be used in the evaluation of Factor 5 - Price.

Bidders must use this sheet to enter their proposed pricing for all specified line items. The "green cells" are the only ones requiring bidder input. Pay close attention to the quantities, units of issue, and any specific order or delivery notes for each item. The proposed cost share is explicitly stated as not being part of the price evaluation.