Staff Sgt. Jeremy Welch directs the boom to refuel an aircraft Feb. 3 during a Red Flag exercise at Nellis Air Force Base, Nev. Red Flag is a multi-national exercise providing a realistic environment to practice combat scenarios. The experience gained during the exercise is vital to the survival of air crews in combat. Sergeant Welch is a boom operator with the 905th Air Refueling Squadron at Grand Forks AFB, N.D. (U.S. Air Force photo/Senior Airman Nadine Y. Barclay)