The coin test

A Reservist from the 446th Airlift Wing Safety Office, McChord Field, Wash., demonstrated the coin test to check the tire tread on a vehicle, Sept. 11, 2011. Maintaining proper tire tread levels is one of the most critical vehicle maintenance items, according to the safety office. With the fall and winter months coming up, having good tire tread helps vehicles maintain good traction on wet roads. (U.S. Air Force photo by Master Sgt. Jake Chappelle)

PHOTO BY: Master Sgt. Jake Chappelle
VIRIN: 110916-F-JB957-032.JPG
Additional Details

No camera details available.


Read More

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, 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.