JOINT BASE LEWIS-MCCHORD, Washington - A Soldier with the 1st Special Forces Group (Airborne) waits for instructions to remove his mask inside a CS gas chamber August 24, during a chemical, biological, radiological and nuclear defense confidence cour...

JOINT BASE LEWIS-MCCHORD, Washington - Soldiers with the 1st Special Forces Group (Airborne) wait for instructions to remove their masks inside a CS gas chamber August 24, during a chemical, biological, radiological and nuclear defense confidence cou...

JOINT BASE LEWIS-MCCHORD, Washington - A Soldier with the 1st Special Forces Group (Airborne) waits for instructions to remove his mask inside a CS gas chamber August 24, during a chemical, biological, radiological and nuclear defense confidence cour...

JOINT BASE LEWIS-MCCHORD, Washington - Soldiers with the 1st Special Forces Group (Airborne) practice detecting a chemical threat August 24, during a chemical, biological, radiological and nuclear defense confidence course. This exercise is designed ...

JOINT BASE LEWIS-MCCHORD, Washington - Two Soldiers with the 1st Special Forces Group (Airborne) clear their protective masks August 24, during a chemical, biological, radiological and nuclear defense confidence course. This exercise is designed to v...

JOINT BASE LEWIS-MCCHORD, Washington - A Soldier with the 1st Special Forces Group (Airborne) instructs a class on how to properly detect a chemical threat August 24, during a chemical, biological, radiological and nuclear defense confidence course. ...