and maintenance funds for cyber operations-peculiar capability development projects. Sec. 1639. Extension of authorities for Cyberspace Solarium Commission. DIVISION B—Military Construction Authorizations Sec. 2001. Short title. Sec. 2002. Expiration of authorizations and amounts required to be specified by law. Sec. 2003. Effective date. TITLE XXI—Army military construction Sec. 2101. Authorized Army construction and land acquisition projects. Sec. 2102. Family housing. Sec. 2103. Authorization of appropriations, Army. Sec. 2104. Modification of authority to carry out certain fiscal year 2019 project. TITLE XXII—Navy military construction Sec. 2201. Authorized Navy construction and land acquisition projects. Sec. 2202. Family housing. Sec. 2203. Improvements to military family housing units. Sec. 2204. Authorization of appropriations, Navy. TITLE XXIII—Air Force military construction Sec. 2301. Authorized Air Force construction and land acquisition projects. Sec. 2302. Family housing. Sec. 2303. Improvements to military family housing units. Sec. 2304. Authorization of appropriations, Air Force. Sec. 2305. Modification of authority to carry out certain fiscal year 2015 project. Sec. 2306. Modification of authority to carry out certain fiscal year 2016 project. Sec. 2307. Modification of authority to carry out certain fiscal year 2017 project. Sec. 2308. Additional authority to carry out certain fiscal year 2018 projects. Sec. 2309. Modification of authority to carry out certain fiscal year 2019 projects. TITLE XXIV—Defense Agencies military construction Sec. 2401. Authorized Defense Agencies construction and land acquisition projects. Sec. 2402. Authorized Energy Resilience and Conservation Investment Program projects. Sec. 2403. Authorization of appropriations, Defense Agencies. TITLE XXV—International programs Subtitle A—North Atlantic Treaty Organization Security Investment Program Sec. 2501. Authorized NATO construction and land acquisition projects. Sec. 2502. Authorization of appropriations, NATO.