US Navy (USN) Hospital Corpsman Second Class (HM2) Johnathan Bradford (center) and USN HM2 Thomas Miller (right), both assigned to the 2nd Force Services Support Group (FSSG), work together to assemble a patient airlock for a Chemical Biological Protective Shelter (CBPS), while US Department of Defense (DOD) Equipment SPECIALIST, Mr. Dan Breitenstein, supervises, during a training exercise conducted at Camp Coyote, Kuwait, during Operation ENDURING FREEDOM. The CBPS is a highly mobile chemically protected shelter system designed for emergency medical use in forward battle areas