professor, thanks for joining us. i know you've been there for more than two decades. was this a tough decision for you? >> it wasn't for some reasons. i'm 72, i have a large pension, with a number of outside opportunities. this law did push me over the edge saying it's time to get out of here. >> what specifically is your fear? you knows those on the other side will argue if more are armed on campus, somebody could stop a potential perpetrator. >> the issue is not so much somebody coming into the classroom from the outside, but rather a student in the classroom or more likely a student in my office who is upset about a grade and pulls a gun on me. i'm not going to carry a gun. i don't want to be involved in a gun fight. i teach classes to 500 students. so with that many, it enhances the risk. >> if someone is disgruntled or