only how holmes allegedly executed his rampage but also answer the one question no one knows or understands. why? let s get straight to ed lavendara on the ground for us in aurora, colorado. do we know who this package was actually sent to and when? reporter: our understanding is that it was sent to a psychology professor there at the university of colorado where james holmes had been studying for the past year in that ph.d neuro science program. we learned about the package at the university back on monday when several buildings on campus had to be evacuated for several hours as bomb technicians and teams looked at it to make sure there were no explosive devices or anything. all of that was cleared. yesterday we learned the package had been sent to the university, was found in the mail room, and was addressed from james holmes. kyra? sorry about that, ed. i thought we had a little sound there. let s talk about the details. reporter: i m sorry. that s okay. you still