Jerry Diltz, of the Wyoming Widowmakers, shoots a cup of water to show the power of blank rounds prior to a gunfight demonstration at Fort D.A. Russell Day festivities on F.E. Warren Air Force Base, Wyo., Sunday, July 22, 2012. The annual base open house is timed to coincide with the first weekend of Cheyenne Frontier Days. (U.S. Air Force photo by R.J. Oriez)