Five National Nuclear Security Administration (NNSA) contractor-operated sites conduct activities to design and produce explosive materials. NNSA officials and contractor representatives identified several challenges related to explosives activities, such as the agency’s dwindling supply of explosive materials, aging and deteriorating infrastructure, and difficulty recruiting and training qualified staff. NNSA issued a plan to address these challenges. But it didn’t follow strategic planning practices that ensure accountability over progress. For example, it generally didn’t include measurable performance goals that identify timeframes and responsible parties.