Staff Sgt. Christopher Walker, 436th Security Forces Squadron response force leader, peeks around a cubicle wall during a simulated active shooter scene Oct. 20, 2015, in building 639 on Dover Air Force Base, Del. Walker, along with law officers from the Dover Police Department, Dover, Del.; the Delaware State Police, Troop 3, Camden, Del.; and 436th SFS personnel, initiated a sweep of the building's first and second floors and warehouse areas. (U.S. Air Force photo/Roland Balik)
CAMERA
N/A
LENS
APERTURE
SHUTTERSPEED
ISO
No camera details available.
This photograph is considered public domain and has been cleared for release. If you would like to republish please give the photographer appropriate credit. Further, any commercial or non-commercial use of this photograph or any other DoD image must be made in compliance with guidance found at https://www.dimoc.mil/resources/limitations, which pertains to intellectual property restrictions (e.g., copyright and trademark, including the use of official emblems, insignia, names and slogans), warnings regarding use of images of identifiable personnel, appearance of endorsement, and related matters.