chemistry center on campus. can you elaborate? yeah, what we were hearing from those on campus was that they believed it began at what is called the caudill labs. you re seeing in your picture, the football stadium. caudill labs is very close to that football stadium. this search for the suspect has gone own some time, neil. as you look at the aerial pictures from the chopper there, you can see how big it is. it s 729 acres. tens of thousands of graduate and undergraduate students. so it s a huge task to begin searching a campus of that size. obviously in the aftermath of this incident and we don t know what it was yet, police have to go building by building. we saw them interior the first couple hours leading groups of students out of those buildings.