Official websites use .mil
Secure .mil websites use HTTPS
As the central communications hub for critical messages to and from higher headquarters and critical assets of the 127th Wing at Selfridge Air National Guard Base, Mich., the wing’s Command Post has several back-up communications systems in case of outages of primary systems. This redundancy was tested during a recent exercise, as demonstrated by SMSgt. Christine Koch, Oct. 21, 2011. (U.S. Air Force photo by John S. Swanson)
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.