Two soldiers from Headquarters and Headquarters Company, 301st Maneuver Enhancement Brigade, inspect the other’s Joint Service Lightweight Integrated Suit Technology (JSLIST) Chemical Protective Ensembles preparation for a Chemical, Biological, Radiological, or Nuclear attack or incident on U.S. soil at Joint Base Lewis-McChord, Washington, January 21, 2017. The purpose of the training was to familiarize soldiers with the M50 Joint Service General Purpose Mask, and to ensure that they are prepared to respond to a CBRN incident or attack.