Frozen Defender Air Force Staff Sgt. Andrew Tidwell tests his rifle during an exercise in Grostenquin, France, Jan. 14, 2020. During Frozen Defender, the 435th Security Forces Squadron hones capabilities in a contested environment under harsh conditions. SHARE IMAGE: Download Image: Full Size (2.6 MB) Tags: Air Force Photo By: Air Force Staff Sgt. Devin Boyer VIRIN: 200114-F-EQ901-1293.JPG Photo Gallery