A U.S. Air Force F-16 Fighting Falcon aircraft assigned to the 18th Aggressor Squadron, takes off from Eielson Air Force Base, Alaska, for a mission Aug. 8, 2016, during RED FLAG-Alaska (RF-A) 16-3. RF-A enables joint and international units to sharpen their combat skills by flying simulated combat sorties in a realistic threat environment, which allows them to exchange tactics, techniques and procedures while improving interoperability. (U.S. Air Force photo by Airman 1st Class Cassandra Whitman)

A Royal Canadian Air Force CF-18 Hornet assigned to the 409th Tactical Fighter Squadron, Canadian Forces Base Cold Lake, Alberta, takes off for a morning sortie from the Eielson Air Force Base, Alaska, flight line Aug. 8, 2016, during RED FLAG-Alaska (RF-A) 16-3. This Pacific Air Forces commander-directed exercise is vital to maintaining peace and stability in the Indo-Asia-Pacific region. (U.S. Air Force photo by Airman 1st Class Cassandra Whitman)

A U.S. Air Force F-16 Fighting Falcon aircraft assigned to the 35th Fighter Squadron, Kunsan Air Base, Republic of Korea, launches from the Eielson Air Force Base, Alaska flight line in preparation for a morning sortie Aug. 8, 2016, during RED FLAG-Alaska 16-3. Exercise scenarios occur within the Joint Pacific Alaska Range Complex, a more than 67,000 square mile airspace with minimal impact on the environment. (U.S. Air Force photo by Airman 1st Class Cassandra Whitman)

A U.S. Navy EA-18G Growler aircraft assigned to Electronic Attack Squadron 135, Naval Air Station Whidbey Island, Wash., takes off from Eielson Air Force Base, Alaska, for a morning sortie Aug., 8, 2016, during RED FLAG-Alaska 16-3. This exercise provides unique opportunities to integrate various forces into joint, coalition and multilateral training from simulated forward operating bases. (U.S. Air Force photo by Airman Isaac Johnson)

A U.S. Air Force F-15E Strike Eagle dual-role fighter aircraft assigned to the 336th Fighter Squadron out of Seymour Johnson Air Force Base, N.C., takes off from the Eielson Air Force Base, Alaska, flight line Aug. 8, 2016, during RED FLAG-Alaska 16-3. This exercise provides unique opportunities to integrate various forces into joint, coalition and multilateral training from simulated forward operating bases. (U.S. Air Force photo by Airman 1st Class Cassandra Whitman)

A U.S. Air Force F-16 Fighting Falcon aircraft assigned to the 13th Fighter Squadron, Misawa Air Base, Japan, launches from Eielson Air Force Base, Alaska, for a morning sortie Aug., 8, 2016, during RED FLAG-Alaska 16-3. Conducting RED FLAG training in Alaska signifies the United States’ continued commitment to the Indo-Asia-Pacific region. (U.S. Air Force photo by Airman Isaac Johnson)

A U.S. Air Force KC-135 Stratotanker aerial refueling aircraft assigned to the 91st Air Refueling Squadron, MacDill Air Force Base, Fla., prepares to launch for a morning sortie Aug. 8, 2016, during RED FLAG-Alaska (RF-A) 16-3 at Eielson Air Force Base, Alaska. The Stratotanker provides core aerial refueling support to Air Force, Navy and allied nation aircraft during RF-A 16-3, a Pacific Air Forces commander-directed exercise that provides realistic combat training to participants. (U.S. Air Force photo by Airman Isaac Johnson)