Members of the 173rd Fighter Wing Maintenance Group recover an F-15 Eagle after a Dissimilar Aircraft Training mission on June 17, 2004 during Operation Sentry Cactus. Operation Sentry Cactus took place in Tucson, AZ between the F-16s of the 162nd Fighter Wing and the F-15s of the 173rd Fighter Wing and gives both units a chance to fly against different aircraft.(U.S. Air Force Photo by Staff Sgt. Jennifer Shirar Released)