; and (E) other information the Secretary determines necessary. . 2842. Aggregation of energy efficiency and energy resilience projects in life cycle cost analyses The Secretary of Defense or the Secretary of a military department, when conducting life cycle cost analyses with respect to investments designed to lower costs and reduce energy and water consumption, shall aggregate energy efficiency projects and energy resilience improvements as appropriate. 2843. Authority of the Secretary of the Air Force to accept lessee improvements at Air Force Plant 42 (a) Acceptance of lessee improvements at Air Force Plant 42 A lease of Air Force Plant 42, in whole or part, may permit the lessee, with the approval of the Secretary of the Air Force, to alter, expand, or otherwise improve the plant or facility as necessary for the development or production of military weapons systems, munitions, components, or supplies. Such lease may provide, notwithstanding section 2802 of title 10, United States Code, that such alteration, expansion or other improvement shall, upon completion, become the property of the Federal Government, regardless of whether such alteration, expansion, or other improvement constitutes all or part of the consideration for the lease pursuant to section 2667(b)(5) of such title or represents a reimbursable cost allocable to any contract, cooperative agreement, grant, or other instrument with respect to activity undertaken at Air Force Plant 42. (b) Congressional notification When a decision is made to approve a project to which subsection (a) applies costing more than the threshold specified under section 2805(c) of such title, the Secretary of the Air Force shall notify the congressional defense committees in writing of that decision, the justification for the project, and the estimated cost of the project. The Secretary may not carry out the project until the end of the 21-day period beginning on the date the congressional defense committees receive such notification or, if earlier, the end of the 14-day