An F-22 Raptor comes to a stop Nov. 5 on the runway at Eielson Air Force Base, Alaska. The F-22 underwent cold-weather testing on its breaking system, with emphasis on its ability to maneuver, stop and go on slippery surfaces. The aircraft was tested by the 411th Flight Test Squadron during a three-week deployment on incrementally low-level runway condition reading surfaces, with temperatures ranging between 37 to -13 degrees. The F-22 is from Edwards AFB, Calif.