Staff Sgt. Jeffery Worley, substance abuse control officer on Marine Corps Logistics Base Barstow, Calif., administers abreathalyzer test to Sgt. Darren Cole, October 24, 2013. The Marine Corps administers random breathalyzer tests in additionto urinalysis tests to help prevent substance abuse within the Corps. - Staff Sgt. Jeffery Worley, substance abuse control officer on Marine Corps Logistics Base Barstow, Calif., administers a breathalyzer test to Sgt. Darren Cole, October 24, 2013. The Marine Corps administers random breathalyzer tests in addition to urinalysis tests to help prevent substance abuse within the Corps.