Sgt. 1st Class Stanley Noga, of A Company, 3rd Battalion,

Sgt. 1st Class Stanley Noga, of A Company, 3rd Battalion, 354th Regiment, 104th Training Division (LT) shows a cadet of the 6th Regiment, Cadet Initial Entry Training (CIET) how to check the seal of his M40 Field Protective Mask during Chemical, Biological, Nuclear and Radiological (CBRN) countermeasures training at the CBRN Defense Mask Confidence Course on Monday, July 13 at Fort Knox, Ky. Consisting of four hours of classroom instruction and four hours of practical application, the course is designed to instill cadets with confidence in both their training and their equipment. (U.S. Army photo by Sgt. Javier Amador)