; and (E) an identification of individual aircraft communities, if any, with strained supply chains with single-source suppliers. 1045. Report on capabilities and capacities of Armored Brigade Combat Teams (a) In general Not later than 60 days after the date of the enactment of this Act, the Secretary of the Army shall submit to the congressional defense committees a report on the capabilities and capacities of Armored Brigade Combat Teams (ABCTs). (b) Elements The report required under subsection (a) shall include the following: (1) A description of the total number of Armored Brigade Combat Teams required to support the National Defense Strategy (NDS). (2) A description of the manner in which the Army plans to equip and field future Armored Brigade Combat Teams. (3) A description of the total number of mechanized infantry companies required in support of the Armored Brigade Combat Teams. (4) A description of steps being taken to improve the number and quality of live-fire gunnery exercises executed each year, including improving execution of battalion and brigade-level combined arms live-fire exercises both at home station and at the Combat Training Centers. (5) A description of training being conducted to train Armored Brigade Combat Teams in combined arms for air defense and to counter unmanned aerial vehicles with organic weapons and tactics. (6) A plan to improve personnel preparedness by the reduction of non-deployable soldiers and improvements in combat vehicle crew stability and material readiness of key combat systems. (7) A description of deficiencies in repair parts and number of qualified mechanics, and a plan to correct such deficiencies. (8) A plan for the modernization of the Armored Brigade Combat Teams. 1046. Improvement of annual report on civilian casualties in connection with United States military operations (a) Modification and expansion of elements Subsection (b) of section 1057 of the National Defense Authorization Act for Fiscal Year 2018 ( Public Law 115–91 ) is amended— (1) in