Two U.S. Air Force A-10 Thunderbolt IIs from the 25th Fighter Squadron prepare to take off at Osan Air Base, Republic of Korea, Oct. 22, 2018. A-10s participated in routine training aimed at sharpening skills needed for search and rescue operations. The A-10 “Warthog” is the first AF aircraft designed specifically to provide close air support to ground forces and is well-known for its 30 mm GAU-A8 Avenger Gatling-type Autocannon capable of firing 3,900 rounds per minute. (U.S. Air Force photo by Staff Sgt. Benjamin Raughton)