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ions have been met. DT&E is planned and monitored by the developing agency and is normally conducted by the contractor. It includes the T&E of components, subsystems, Preplanned Product Improvement (P3I) changes, hardware/software integration, and production qualification testing. It encompasses the use of models, simulations, test beds, and prototypes or full-scale engineering development models of the system. It includes test and evaluation conducted to: a. Demonstrate that the engineering design and development process is complete b. Demonstrate that the design risks have been minimized c. Demonstrate that the system will meet specifications Source: https://assist.dla.mil -- Downloaded: 2026-07-20T01:51Z Check the source to verify that this is the current version before use. MIL-STD-881

ns for all commodities can be found at Appendix K.3. Several commodities have unique elements that are applied which also appear in Appendix K, NOTE: If lower level information can be collected, use the structure and definitions in Appendix B, Electronic/Avionics/Generic Systems. NOTE: Refer to Appendix B, Electronic/Avionics/Generic Systems for further breakout and definitions for Software. NOTE: If lower level information can be collected, use the structure and definitions in Appendix B, Electronic/Avionics/Generic Systems. NOTE: Work breakdown structure and definitions for Secondary Vehicle are the same as those for the lead variant vehicle. Source: https://assist.dla.mil -- Downloaded: 2026-07-20T01:51Z Check the source to verify that this is the current version before use. MIL-STD-881

life cycle. Attention must be paid to cybersecurity at all acquisition category levels and all classification levels, including unclassified, throughout the entire life cycle; this includes systems that reside on networks and stand-alone systems that are not persistently connected to networks during tactical and strategic operations. Since responsibility for cybersecurity extends to every member of the acquisition workforce, DoD and its contractors need to design, develop, and acquire systems that can operate in applicable cyber threat environments. As such it is critical to understand what the cost of these systems is (i.e., hardware, software, systems engineering, program management, and system test and evaluation). MIL-STD-881 supports this effort by providing the structure to identify

d 881 (MIL-STD-881) contains weapon system related examples of work breakdown structures. Similarly, the Cost Analysis and Program Evaluation Operating and Support Cost-Estimating Guide contains a cost element structure for operations and support of weapon systems. While MIL-STD 881 and the Cost Analysis and Program Evaluation Guide provide excellent examples, they may not fit the circumstances of the alternative being estimated. As a result, the analyst may have to build a new cost element structure to fit the level of detail and unique circumstances of their estimate. Figure 4.1 contains cost elements that may be used in a facility construction cost element structure. 4.3.4. Select Estimating Technique – will likely vary across cost elements 4.3.4.1. The estimating technique will depend

cifications, Standards, and Handbooks. The following specifications, standards, and handbooks form a part of this document to the extent specified herein. DEPARTMENT OF DEFENSE STANDARDS MIL-STD-881 - Work Breakdown Structures for Defense Materiel Items MIL-STD-882 - System Safety MIL-STD-11991 - General Standard for Parts, Materials, and Processes MIL-STD-3034 - Reliability-Centered Maintenance (RCM) Process DEPARTMENT OF DEFENSE HANDBOOKS MIL-HDBK-245 - Preparation of Statement of Work (SOW) MIL-HDBK-470 - Designing and Developing Maintainable Products and Systems MIL-HDBK-1390 - Level of Repair Analysis (Copies of these documents are available online at https://assist.dla.mil or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.)

MIL-HDBK-1785, System Security Engineering Program Management Requirements, 22 Apr 2014 Military Engineering Data Asset Locator System (MEDALS), Defense Logistics Agency MIL-STD-881, Work Breakdown Structures for Defense Materiel Items, 3 Oct 2011 MIL-STD-882E, System Safety, 11 May 2012 MIL-STD-1472H, Human Engineering, 15 Sep 2020 MIL-STD-3022, Documentation of Verification, Validation, and Accreditation (VV&A) for Models and Simulations, 5 Apr 2012 MIL-STD-31000B, Technical Data Packages, 31 Oct 2018 MIL-STD-46855A, Human Engineering Requirements for Military Systems, Equipment, and Facilities, 24 May 2011 Product Data Acquisition, Functional Areas, AF Portal (https://www.my.af.mil/gcss- af/USAF/ep/globalTab.do?channelPageId=s2D8EB9D629AAD6C8012A3858765B1825) Program Protection Plan Ou