You are the lead investigator at a sniper-type shooting at the local university. Somebody fired about 6 shots from the fourth floor of a parking garage, striking 3 students and 1 instructor. The instructor and one of the students died. The other two students are likely to recover. The students of the instructor who died related the instructor's really bad argument with a student about capital punishment and a paper that was submitted. Because of plagiarism, the instructor gave the student an F for the paper. The student told the instructor that he had better be careful because he (the student) is a crack shot. The instructor kicked the student out of class following the threat. The student was located down the street in a local tavern having a beer about an hour after the shooting. Police took him into custody. The student suspect drives a pickup truck with a gun rack. A partial box of .30 caliber rifle shells were found on the floorboard of the truck, but no weapon was recovered.