Marines and Sailors of the Chemical Biological Incident Response Force conduct a live chemical agent exercise at Fort A.P. Hill, Virginia on April 10. The unit conducted simulated casualty extraction in clouds of CS gas to prepare for real life evacuation situations. In order to execute its mission, CBIRF possesses a wide variety of unique skill sets that are task organized to address all possible aspects of a CBRNE attack. CBIRF has six major sections organic to the battalion: Explosive Ordnance Disposal, Technical Search and Rescue, Decontamination, Medical, Identification and Detection, and Search and Rescue/Casualty Extraction. (Official Marine Corps Photo by Sgt Kuande L. Hall/Released)