video from 2011, showing police officer s shooting and killing four men, one of them their own informant. >> miami-dade county has never seen anything like it. as infrared cameras roll from aircraft, police kill four men, including their informant, in this botched sting operation in the redland. >> i got two subjects running west. running west, into the trees. >> 30 seconds later, and we warn you again, you're about to see something quite violent, the third home invader darts in front of the house holding a gun and is shot down by a sergeant. his gun later found where he fell. that left only betancourt, the informant, at the corner with 70 seconds to live. instead of handcuffing him, sergeant manual malgor said he told him to roll over on his back. that's when he said the surrendering informant made a quick move to his waistband.