Lance Cpl. Thomas Ratterman, chemical, biological, radiological and nuclear defense specialist with Combat Logistics Regiment 45, 4th Marine Logistics Group, Marine Forces Reserve collect samples of an unknown chemical substance during an assessment and consequence management team training exercise at Marine Corps Support Facility, New Orleans, Feb. 8, 2017. During the exercise, Marines practiced responding to a chemical threat. The Marines conducted area reconnaissance, sample collection and classification of unknown substances. (Unites States Marine Corps

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