MARINE CORPS AIR STATION MIRAMAR, Calif. – Aircraft Rescue and Firefighting Marines collect water samples during an exercise aboard Marine Corps Air Station Miramar, Calif., May 29. The Marines collected the samples to send to the San Diego Vector Disease and Diagnostic Lab to test for a contaminant. - MARINE CORPS AIR STATION MIRAMAR, Calif. – Aircraft Rescue and Firefighting Marines collect water samples during an exercise aboard Marine Corps Air Station Miramar, Calif., May 29. The Marines collected the samples to send to the San Diego Vector Disease and Diagnostic Lab to test for a contaminant.