CNN The Situation Room December 12, 2014 22:03:00
They're there to assist the local authorities. we still don't know exactly what happened here. we don't know if it was related to a beef outside or school related. we know these three teenagers ran to the school after they were shot and they were picked up by the fire department there. that's one reason why initially they thought it was an active shooting incident. obviously the local cops know -- have got a lot of training on these issues. we know that the fbi and the atf typically go to the scene of these shootings because they have so much experience, sadly, with many of these. 160 of these...
Source: archive.org