here is what the sheriff said in this investigative documentary. >> reporter: they believe the hartley's not only wandered into a war but at the exact time that a mexican cartel was about to move a large amount of marijuana. up on the bluff, the spotters, his sources told him, saw the first glimpse of a glitch in a drug deal. >> that area is notorious for crossing or storing thousands of pounds of marijuana. we've known that for a long time. that information is what i have relayed to federal officials, local official. we are all aware that that area is used as an area that they hide tons of minute. >> based on your sources and your intelligence, when they began to encroach on what would be a drug deal, they were looked upon as potentially --