U.S. Air Force Senior Airman Ryan Brennan from the 177th Civil Engineering Squadron Fire Department awaits a signal during a test of the runway aircraft arrest system Nov. 14, 2013, at the 177th Fighter Wing at Atlantic City Air National Guard Base, N.J. The arrest system is used to stop aircraft in the event of a brake failure and must be tested yearly. (U.S. Air National Guard photo by Airman First Class Shane Karp/Released)

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Photo by: Airman First Class Shane KarpReleased |  VIRIN: 131114-Z-IM486-019.JPG