Taking no chances in the fearful climate that has followed last week’s shooting rampage at Virginia Tech, four more colleges have reacted aggressively to threatening incidents that otherwise might have passed quietly, or might not even have happened at all.

A 38-year-old student irate about his grade in a course at the University of Cincinnati was arrested on Wednesday after he pledged to exceed the Virginia Tech gunman’s death toll, the Cincinnati Enquirer reported. The student, Karsten Taylor, is alleged to have yelled at an academic adviser, “If you think Virginia Tech was something, wait till I come up there.”

A student at the University of South Carolina at Columbia was arrested on Wednesday with a friend from a nearby Air Force base and charged in connection with a series of small bottle bombs that they allegedly manufactured and detonated, according to the Associated Press. The bombs, which were set off near a dormitory, caused neither injuries nor property damage. A university spokesman said, “Recent events at Virginia Tech have every university community in America probably at a little more heightened awareness right now.”

A student from Sri Lanka attending the State University of New York College of Agriculture and Technology at Cobleskill was briefly sent to a local hospital’s psychiatric ward after officials found that he had posted a self-portrait with shotgun on Facebook, according to The Daily Star, a local newspaper. The Facebook posting also featured a vulgar complaint about the college. The student, Tharindu Meepegama, now faces questions from college officials, who said they had acted in the interest of “safety and security” on the campus.

Terra Community College, in Ohio, was evacuated and closed for a two-hour period last night amid fears that a possibly suicidal student might try to kill herself with a gun on the campus, according to the Sandusky Register. The student, who apparently had just been expelled or had just dropped out, was later found unharmed. A university official said that “we wouldn’t have done anything differently if Virginia Tech hadn’t happened.” —Andrew Mytelka