U.S. Army Staff Sgt. Maria Acuna, with Allied Forces

U.S. Army Staff Sgt. Maria Acuna, with Allied Forces Northern Europe (AFNORTH) Battalion, main instructor, describes proper hands positions to Soldiers and Airmen before they pass the clinch drill, during which they have to hold their opponent in order to stop incoming punches, for a combatives level one class taught on Chièvres Air Base, Belgium, March 22, 2017. AFNORTH Battalion, USANATO Brigade led this class open to military forces stationed in the Benelux. (U.S. Army photo by Visual Information Specialist Pierre-Etienne Courtejoie)