U.S. Army Command Sgt. Maj. Cory T. Crow, foreground, participates in mock door exercises at Aviano Air Base, Italy, in preparation for airborne operations onto Juliet drop zone in Pordenone, Italy, Dec. 2, 2015. Crow is the senior enlisted advisor assigned to the 54th Brigade Engineer Battalion, 173rd Airborne Brigade. U.S. Army photo by Paolo Bovo