For my monitoring friends in the Las Vegas area - heads up!An F-22 Raptor flies off after being refueled by a KC-135 Stratotanker during the Red Flag exercise Feb 7 at Nellis Air Force Base, Nev. The two KC-135 Stratotankers from the 319th Air Refueling Wing at Grand Forks Air Force Base, N.D., make up the lead tanker unit during the exercise. Red Flag is an exercise designed to hone the warfighting skills of Air Force pilots for conflicts. (U.S. Air Force photo/1st Lt. Randi Norton)