This program provides assurance that the Trident I and II weapon systems are reliable and accurate, using a rigorous test and evaluation program, which includes evaluation of performance during routine operations at sea, all the way to evaluation of periodic test launches (for which the Program Area also provides support). Trident missile accuracy is measured using extensive instrumentation and specialized processing facilities in the Strategic Systems Department. Those results are used to develop and refine high-confidence predictive submarine-launched ballistic missile accuracy models. APL continues to plan and evaluate Trident Strategic Weapons Systems tests in order to develop the detailed system understanding to not only predict operational system performance but also provide the first indicators of the effects of aging to determine which system elements need to be replaced.

DASO

Strategic Systems Department personnel provide support for system certification, via the Demonstration and Shakedown Operation (DASO) program. DASO consists of a series of exercises conducted by both crews of the SSBN over several weeks, both in-port and at-sea, intended to verify the readiness of the SWS and crew to begin patrol. DASOs are generally conducted after an SSBN is first built and after an SSBN receives a major upgrade and often culminate in a test missile launch. Strategic Systems participates throughout DASO by providing independent evaluation of the readiness of the SWS to begin patrol, supporting the naval personnel that issue the system's certification, developing special tests, and providing crew training.