Forward Operating Base Delhi massacre are murders that occurred on August 10, 2012 at the Forward Operating Base Delhi within Garmsir village, Helmand Province, Afghanistan. A young man, who had been allowed to live on the base, killed three unarmed US Marines and one marine was also severely injured. Using only the above description and what you know about the world, "There were four US Marines harmed during the Forward Operating Base Delhi massacre on August 2012." is definitely correct, incorrect, or inconclusive? 