; or (ii) if no visit could be obtained under that subparagraph, the gaps in evidence in the investigation concerned as a result of the lack of such a visit. 5. Coordination between geographic combatant commands and the Department of State (a) In general Not later than 180 days after the date of the enactment of this Act, the Secretary of Defense shall direct each commander of a geographic combatant command to coordinate with the Department of State to establish and maintain an uninterrupted line of communication between such command and the Chief of Mission (of the Chief's designee) in any country in which such command is conducting military operations in order to assist in the response to reports of civilian casualties resulting from such military operations. (b) Primary objective The primary objective of the line of communication under this section shall be to serve as a channel for fielding and coordinating reports of civilian casualties resulting from United States military operations undertaken by the command concerned in the country concerned. 6. Database on reports on investigations (a) Database required Not later than one year after the date of the enactment of this Act, the Secretary of Defense shall establish and maintain within the Department of Defense a database that preserves and organizes reports of the Department on investigations of civilian casualties resulting from United States military operations (including reports under section 1057 of the National Defense Authorization Act for Fiscal Year 2018, as amended by section 3 of this Act), and the results of such investigations. (b) Searchability The database required by subsection (a) shall be searchable by personnel across the Department. (c) Availability to public The public shall have access to, and be able to search, the database required by subsection (a) through an internet website of the Department that is available to the public. For purposes of such access, appropriate information in the database may be maintained in a classified annex