From the 142nd Fighter Wing, Portland, Oregon, Staff Sgt. Aaron Lamb, (left), 142nd Maintenance Group electrical-environmental systems craftsman, reviews technical data with Master Sgt. Russ Stevens, an F-15 Eagle crew chief, Jan. 28 as they prepare to replace a vertical-right-stabilizer light during a deployment to Combat Archer, a two-week weapon systems evaluation program at Tyndall Air Force Base. During the program, participants load, fly and shoot live missiles and subsequently evaluate the entire process to validate whether the weapon performs according to established specifications. (Air Force Photo Released/Mary McHale)