Capt. Matt Eslow of the 194th Fighter Squadron, 144th Fighter Wing, performs a pre-flight inspection on a F-16 fighter jet during RIMPAC 2012.The 2012 Rim of the Pacific exercise is the twenty-third maneuver in a history of bi-annual drills that dates back four decades. The purpose of the exercise is to bring together nations to observe, train and exchange information that fosters a cooperative training environment. (Air National Guard photograph by MSgt. David J. Loeffler)