U.S. Army South Commanding General, Maj. Gen. William Thigpen, speaks at a migrant operation rehearsal of concept drill at Joint Base San Antonio-Fort Sam Houston, Texas, Jan. 20, 2022. Army South, the Army Service Component Command to U.S. Southern Command, hosted the event, which simulated a deployment to Guantanamo Bay, Cuba, to provide feedback for all aspects of the operation.

U.S. Department of Defense and Department of Homeland Security personnel participate in a migrant operation rehearsal of concept drill at Joint Base San Antonio-Fort Sam Houston, Texas, Jan. 20, 2022. Army South, the Army Service Component Command to U.S. Southern Command, hosted the event, which simulated a deployment to Guantanamo Bay, Cuba, to provide feedback for all aspects of the operation.