170919-M-CK339-005 MEDITERRANEAN SEA (Sept. 20, 2017) Marines attached to the 15th Marine Expeditionary Unit’s (15th MEU) Unmanned Aerial Surveillance unit launch an RQ-21A Blackjack small tactical unmanned aircraft system from the San Antonio-class amphibious transport dock ship USS San Diego (LPD 22). San Diego is deployed with the America Amphibious Ready Group and 15th MEU to support maritime security operations and theater security cooperation efforts in the U.S. 6th Fleet area of operations. (U.S. Marine Corps photo by Lance Cpl. Jeremy Luis Laboy/Released)