Marines practice proper Mission Oriented Protective Posture (MOPP) suit removal during the 11TH Marine Expeditionary Unit (MEU) chemical, biological, radioactive and nuclear (CBRN) training aboard Camp Pendleton, CA, April 19, 2013. MOPP gear protects users from a variety of chemical and nuclear attacks. The MEU undergoes annual CBRN training to keep personnel mission ready and to familiarize Marines and Sailors with special CBRN equipment. (Photo by: Cpl Jonathan R. Waldman, 11TH MEU Combat Camera)