A US Air Force F-22 Raptor pilot assigned to the 199th Fighter Squadron, the Hawaii Air National Guard unit at JB Pearl Harbor-Hickam, takes off during exercise Sentry Aloha on 13 March 2014. Sentry Aloha, which began 6 March, is a three-week aerial combat exercise with more than 350 Airmen, five units, and more than fifty aircraft including F-16s, C-130s, F-22s, other fighter and transport aircraft participating. Although held regularly, this Sentry Aloha exercise was the largest ever. The exercise focused on offensive and defensive counter measures and fighter integration.
