and Security 317,622 317,622 Technology development 0 0 Use of prior year balances 0 0 Subtotal, Defense environmental cleanup 5,522,063 5,522,063 Rescission: Rescission of prior year balances –15,562 –15,562 Rescission of prior year balances (Gen. Prov.) 0 0 Total, Defense Environmental Cleanup 5,506,501 5,506,501 Other Defense Activities Environment, health, safety and security Environment, health, safety and security 139,628 139,628 Program direction 72,881 72,881 Total, Environment, Health, safety and security 212,509 212,509 Independent enterprise assessments Independent enterprise assessments 24,068 24,068 Program direction 57,211 54,211 Non-defense function realignment [–3,000] Total, Independent enterprise assessments 81,279 78,279 Specialized security activities 254,578 254,578 Office of Legacy Management Legacy management 283,767 283,767 Program direction 19,262 19,262 Total, Office of Legacy Management 303,029 303,029 Defense related administrative support Chief financial officer 54,538 54,538 Chief information officer 124,554 124,554 Total, Defense related administrative support 179,092 179,092 Office of hearings and appeals 4,852 4,852 Subtotal, Other defense activities 1,035,339 1,032,339 Use of prior year balances (HA) 0 0 Total, Other Defense Activities 1,035,339 1,032,339 Defense Nuclear Waste Disposal Yucca mountain and interim storage 26,000 0 Total, Defense Nuclear Waste 26,000 0 E Additional Provisions LI Procurement 5101. Briefing on plans to increase readiness of B–1 bomber aircraft (a) In general Not later than January 31, 2020, the Secretary of the Air Force shall provide the congressional defense committees a briefing on the Air Force's plans to increase the readiness of the B–1 bomber aircraft. (b) Elements The briefing required under subsection (a) shall include the following elements: (1) A description of aircraft structural issues. (2) A plan for continued structural deficiency data analysis and training. (3) Projected repair timelines. (4) Future mitigation strategies. (5) An