On an unpredictable battlefield, only nine seconds, and a good set of gear, can be the difference between mild irritation and suffocation. This was taught to Cadets of 7th Regiment, Advanced Camp through an uncomfortably hands-on method on July 7, 2021, during their Chemical, Biological, Radiological, and Nuclear training, or CBRN, at Fort Knox, KY. After being given extensive lessons on their JSLIST (Joint Service Lightweight Integrated Suit Technology) suits, a set of protective clothing to wear over their uniforms, as well as the M50 Protective Masks, Cadets formed lines and charged into a small, unventilated concrete building in the woods. [...]