Four C-17 Globemaster IIIs taxi down a runway prior to participating in a nine-ship formation flight during Exercise Defender Pacific 21 at Andersen Air Force Base, Guam, Aug. 2, 2021. Defender Pacific 21 is a U.S. Army Pacific exercise that operationalizes the National Defense Strategy by practicing the strategic deployment, command and control, and employment of combat-credible forces into the region, and supports Indo-Pacific Command's Joint warfighting concepts. (U.S. Air Force photo by Staff Sgt. Rachel Williams)