A U.S. Army M1 Abrams tank from 2nd Brigade Combat Team, 1st Armored Division, Fort Bliss, Texas fires a 120mm round during a live fire exercise at Iron Union 18-6 in the United Arab Emirates, Jan. 23, 2018.
Iron Union is a recurring exercise focusing on combined arms, security, and staff operations. (U.S. Army photo by Sgt. Thomas X. Crough) Original public domain image from Flickr