U.S. Marine Cpl. Donald L. Harmon, a Cleveland, Ohio, native, takes a picture of evidence at Osan Air Base in the Republic of Korea March 19. Scene preservation was one of the response scenarios during a chemical, biological, radiological and nuclear joint training exercise with Marine Wing Headquarters Squadron 1 CBRN and 51st Civil Engineer Squadron CBRN. The week-long bilateral training event enabled Marines and airmen to learn different tactics, techniques and procedures. Harmon is a CBRN Defense Specialist with Marine Wing Headquarters Squadron 1, 1st Marine Aircraft Wing, III Marine Expeditionary Force. ( - U.S. Marine Cpl. Donald L. Harmon, a Cleveland, Ohio, native, takes a picture of evidence at Osan Air Base in the Republic of Korea March 19. Scene preservation was one of the response scenarios during a chemical, biological, radiological and nuclear joint training exercise with Marine Wing Headquarters Squadron 1 CBRN and 51st Civil Engineer Squadron CBRN. The week-long bilateral training event enabled Marines and airmen to learn different tactics, techniques and procedures. Harmon is a CBRN Defense Specialist with Marine Wing Headquarters Squadron 1, 1st Marine Aircraft Wing, III Marine Expeditionary Force. (