US Air Force C-17A Globemaster III's on the flight line as a KC-10 Extender takes off, at Joint Base Lewis-McChord, Washington.

C-17A Globemaster III 99-0166 being prepared for a mission during Exercise Mobility Guardian at Joint Base Lewis-McChord.

A C-17A Globemaster III assigned to the 62nd Airlift Wing, approaches a Royal Australian Air Force KC-30A for aerial refueling.

Airmen load cargo onto a C-17A Globemaster III at Joint Base Lewis-McChord.

Major Justin Reis, of the 59th Medical Wing based at Joint Base San Antonio, Texas, leads a team attending to a patient in a simulated medical emergency aboard a US Air Force C-17A enroute to Fairchild AFB, Washington.

A Republic of Korea C-130 taxis in to collect cargo at Yakima Air Terminal-McAllister Field, Washington.

RAF Atlas C1 ZM408 departs Joint Base Lewis-McChord on a mission during the second half of Exercise Mobility Guardian.

A US Air Force C-130J Hercules climbs away after an airdrop at Yakima Training Center, Washington.