Green Berets carried booby trapped rounds with them and slipped them into enemy ammunition caches whenever possible. They would also load them into the magazines of rifles found near dead enemy soldiers. They were always careful to leave just one round at a time so all the evidence of sabotage would be destroyed when the round was fired. When the ammo turned up in the front lines, weapons began exploding, killing enemy riflemen and sometimes entire mortar crews. Then, the second part of Eldest Son kicked in: the dissemination of forged Chinese and NVA documents about the problem as well as U.S. intelligence briefs designed to fall into enemy hands. One bogus enemy report read "We know that it is rumored some of the ammunition has exploded in the AK-47. This report is greatly exaggerated. It is a very, very small percentage of the ammunition that has exploded." There were even Armed Forces Radio and TV PSAs about the dangers of using captured weapons due to their "faulty metallurgy" which were, of course, meant for the enemy to overhear.