this." >> i remember looking down at this paper, and by the third paragraph, the hair on the back of my neck stood up. i thought, "oh, my god. this is him." >> it didn't take much more than that, at first blush, to realize there's something really chilling about this. >> we were in agreement. ted kaczynski was our primary suspect. >> we're going to close down every other suspect, and we're going to go ahead and turn the unabomb task force towards this one individual. >> we had 2,417 actual suspects. they're numbered chronologically, as the information is received. ted kaczynski's file was number 2,416. >> the task force sent agents to montana to get eyes on kaczynski and to try to connect him to each one of the attacks. >> it took us a good 60 days of nonstop, 7-day-a-week, 24-hours-a-day, gathering evidence that would convince a federal judge that we had enough probable cause, not for an arrest warrant, which is what i wanted, but for a search warrant. >> for example, check all the