A Royal Canadian Air Force CF-18 Hornet aircraft assigned to the 409th Tactical Fighter Squadron, Canadian Forces Base Cold Lake, Alberta, taxis before a morning sortie while a U.S. Air Force F-15E Strike Eagle dual-role fighter aircraft assigned to the 336th Fighter Squadron (FS) assigned to Seymour Johnson Air Force Base, N.C., and a U.S. Air Force F-16 Fighting Falcon aircraft assigned to the 13th FS, Misawa Air Base, Japan, wait at the end of runway during RED FLAG-Alaska 16-3 at Eielson Air Force Base, Alaska, Aug. 15, 2016. At the height of the exercise, up to 70 fighter jets can operate simultaneously in the same airspace. (U.S. Air Force photo by Airman 1st Class Cassandra Whitman)

A Royal Canadian Air Force CF-18 Hornet aircraft assigned to the 409th Tactical Fighter Squadron, Canadian Forces Base Cold Lake, Alberta, takes off from the Eielson Air Force Base, Alaska runway during RED FLAG-Alaska 16-3, Aug. 15, 2016. The aircraft will participate in a morning sortie over the Joint Pacific Alaska Range Complex airspace, which spans more than 67,000 square miles and provides a realistic training environment that allows commanders to train for full spectrum engagements, ranging from individual skills to complex, large-scale engagements. (U.S. Air Force photo by Airman 1st Class Cassandra Whitman)

A U.S. Air Force F-15E Strike Eagle dual-role fighter aircraft assigned to the 336th Fighter Squadron assigned to Seymour Johnson Air Force Base, N.C., takes off for the Joint Pacific Alaska Range Complex (JPARC) from Eielson Air Force Base, Alaska during RED FLAG-Alaska 16-3, Aug. 15, 2016. The strength of the JPARC is its expansive co-located air and land ranges as well as a significant potential for co-located air and sea ranges, which makes it the largest instrumented air, ground and electronic combat training range in the world. (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 for a morning sortie during RED FLAG-Alaska (RF-A) 16-3 at Eielson Air Force Base, Alaska, Aug. 15, 2016. RF-A provides realistic combat training essential to the success of air and space operations. (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 assigned to Misawa Air Base, Japan, taxis on the Eielson Air Force Base, flightline during RED FLAG-Alaska (RF-A) 16-3, Aug. 15, 2016. RF-A exercises are 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 Flacon aircraft assigned to the 18th Aggressor Squadron (AGRS) takes off from the Eielson Air Force Base, Alaska, flightline during RED FLAG-Alaska (RF-A) 16-3, Aug. 15, 2016. The 18th AGRS supports RF-A by sharing its knowledge of flying with participating units in the exercise, which ensures the U.S. and its allies receive the best air combat training possible. (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 assigned to Kunsan Air Base, Republic of Korea, takes off from Eielson Air Force Base, Alaska, for a morning sortie during RED FLAG-Alaska (RF-A) 16-3, Aug. 15, 2016. RF-A enables joint and international units to sharpen their combat skills by flying simulated combat sorties in a realistic threat environment while also allowing them to exchange tactics, techniques and procedures to improve interoperability. (U.S. Air Force photo by Airman 1st Class Cassandra Whitman)