MINOT AIR FORCE BASE, N.D. -- Personnel from the 5th Bomb Wing here and the 2nd Bomb Wing from Barksdale AFB, La., rush to their vehicles during an Alert Force Response exercise during Prairie Vigilance 09-7 here April 26. Prairie Vigilance is a multi-wing exercise established to implement and assure safe, secure, reliable nuclear weapons standards and procedures. The exercise will test more than 3,500 personnel during a 10 day span with joint coordination between both Air Force bases. (U.S. Air Force photo by Airman 1st Class Jesse Lopez)