INDIAN HEAD, Md. (March 17, 2021) U.S. Marines and Sailors with Chemical Biological Incident Response Force (CBIRF) participate in the final training event during CBIRF Basic Operations Course (CBOC) aboard Naval Support Facility Annex Stump Neck, Md., March 17, 2021. Marines and Sailors stationed at CBIRF attend CBOC in order to have a basic familiarization on how CBIRF conducts rescue operations, which gives the unit a robust capability in the event a response is needed. (U.S. Marine Corps photo by Staff Sgt. Kristian S. Karsten)