sentences:  The Lend-Lease air bases from Great Britain, which were on 99-year leases were reduced to skeleton units and used largely as MATS weather stations.They were all closed for budgetary reasons in 1949.The postwar Sixth Air Force, redesignated Caribbean Air Command as part of the 1946 USAAF reorganization, and its successor units returned to its prewar mission, the defense of the Panama Canal; support for friendly Latin American air forces, and to provide support to Latin American nations engaged in anti-communist activities during the Cold War.