Army Sgt. 1st Class Joaquin Spikes securely straps a gas mask during a chemical, biological, radiological and nuclear scenario at Camp Atterbury, Ind., July 17, 2017, during the 2017 Army Materiel Command's Best Warrior Competition. Spikes is assigned to the U.S. Army Security Assistance Command. Army photo by Sgt. 1st Class Teddy Wade