; and (2) the Senate encourages the Under Secretary of Defense for Acquisition and Sustainment and other military departments and commands in the Department of Defense to review the efforts of the Army with Capability Drops 1 and 2 to inform future decisions about how to integrate commercial technology into the Distributed Common Ground System Enterprise and other national security systems. 112. Authority of the Secretary of the Army to waive certain limitations related to the Distributed Common Ground System-Army Increment 1 Section 113(d) of the National Defense Authorization Act for Fiscal Year 2017 ( Public Law 114–328 ; 130 Stat. 2028) is amended by striking Secretary of Defense both places it appears and inserting Secretary of the Army . C Navy programs 121. Modification of prohibition on availability of funds for Navy waterborne security barriers Section 130 of the John S. McCain National Defense Authorization Act for Fiscal Year 2019 ( Public Law 115–232 ) is amended— (1) in subsection (a) by striking for fiscal year 2019 may be obligated or expended to procure legacy waterborne security barriers for Navy ports and inserting for fiscal year 2019 or fiscal year 2020 may be obligated or expended to procure legacy waterborne security barriers for Navy ports, including as replacements for legacy barriers ; and (2) by adding at the end the following new subsection: (d) Notification Not later than 15 days after an exception is made pursuant to subsection (c)(2), the Secretary of the Navy shall submit a written notification to the congressional defense committees that includes— (1) the name and position of the government official who determined exigent circumstances exist; (2) a description of the exigent circumstances