just a few months ago, there was the big melee that got national coverage. so there's always something going on here. usually it's something pretty fun. a lot of parties, a lot of memories made by island vista, utsb students and students at santa barbara city college. they had some horrible memories made overnight. a lot of them getting up this morning, just two weeks away from finals, shaking their heads, thinking, how could this happen? >> thank you very much for that. on the heels of that report, let's bring in jim cavanaugh. so, jim, there's this youtube video being examined as part of the investigation. what are police hoping to learn from the suspect's motives? what about copycats who might be inspired by this kind of violent attack? >> great question. copycats are real. people that are holding grudges or suffering some mental illness can see things in the news and want to act out.