Marines and sailors with Chemical Biological Incident Response Force, CBIRF, conducted an Initial Reaction Force B certification exercise, CERTEX, at Naval Support Facility Dahlgren, Va., Dec. 13, 2016. This CERTEX evaluated all sections composing the IRF including identification and detection, technical rescue, decontamination, search and rescue/casualty extraction, medical, explosive ordnance disposal, as well as command and control. - Marines and sailors with Chemical Biological Incident Response Force, CBIRF, conducted an Initial Reaction Force B certification exercise, CERTEX, at Naval Support Facility Dahlgren, Va., Dec. 13, 2016. This CERTEX evaluated all sections composing the IRF including identification and detection, technical rescue, decontamination, search and rescue/casualty extraction, medical, explosive ordnance disposal, as well as command and control.