Sgt. 1st Class Tanya Green, United States Army Drill Sgt. Academy drill sergeant leader observes a group of probationary firefighters in formation at the New York City Fire Academy on Russell Island in New York City, Jan. 5, 2016. Drill sergeant leaders from the United States Army Drill Sergeant Academy on Fort Jackson, S.C., were at the Fire Academy Jan. 4-8, to observe training as part of a collaboration between the Fire Department of New York and the Center for Initial Military Training providing lessons learned and offering alternate training methods for new recruits. (U.S. Army photo by Sgt. 1st Class Brian Hamilton)