Soldiers at Fort McCoy for the Operation Cold Steel exercise participate in exercise operations March 17, 2017, at Fort McCoy, Wis. Operation Cold Steel’s purpose is to qualify select gun crews to support “Objective-T” requirements for Army Early Response Forces, or AERF. Army Reserve forces, which are part of the overall AERF contingency forces, are part of the Army plan to provide a force that can deploy on short notice to respond to contingencies when needed. (U.S. Army Photo by Scott T. Sturkol, Public Affairs Office, Fort McCoy, Wis.)