Army Sgt. 1st Class Marcus Wallace explains his workout routine to Spcs. Wes Schroeder and Hanna Baker at Fort Hood, Texas, June 20, 2018. Wallace, a chemical, biological, radiological and nuclear specialist with Headquarters and Headquarters Company, 504th Military Intelligence Brigade, has been running his own fitness program for more than four years. Army photo by Sgt. Melissa N. Lessard