I heard more than one eye witness say they saw 3 people drive away from the scene.
I heard on Hannity's radio show (I think Shep) interview one man that was 50yrds away say he saw 3 people in a black SUV drive away very calmly.
In a 5 p.m. Eastern press conference, Burguan said up to three shooters entered the building, opened fire, and eventually fled in a dark SUV.
http://www.freerepublic.com/focus/news/3367491/posts?page=72#72
Jennychases post has 2 of the 3 perps names.
A couple names were initially wrong, but there still could be a 3rd perp whose name they haven’t let out yet.