REVEALED: Three US marines were 'likely killed by carbon monoxide poisoning' after being found dead
Three U.S. Marines who were found unresponsive in a car parked at a North Carolina gas station died of carbon monoxide poisoning, the local sheriff's office said. The lance corporals, identified by the U.S. Marine Corps as Tanner J. Kaltenberg, 19, of Madison, Wisconsin, Merax C. Dockery, 23, of Pottawatomie, Oklahoma, and Ivan R. Garcia,