witham would put himself up in a tree. sometimes next to the playsets of these families with children in the backyard and watch, quietly, making notes of when lights go off and when they come on. when people go to the kitchen table. when they go out to get the paper. >> we would then take the information i gathered, reams of personal details, surveillance photos, maps, and compile them into a victim packet. agents found over a dozen of these with dossiers and a black reef case in the house. >> we have numerous packages they have names, address, children, grandchildren. >> i am seeing spartanburg which is south carolina. georgia. >> that's correct. >> future victims which included some of the names and addresses on the crumpled piece of paper that benanti clutched in his hand. >> we found thousands upon thousands of photographs on sd cards of some of these houses, locations, people. >> they weren't just future targets. the agents found one of a target they already knew very well. brooke. what is the quality? >> s.w.a.t. tea