"What we didn't know is that Mr. Cagle had already arrived at the airport."

The man, Billy Cagle, 49, was arrested after family members told the police that he was headed to the airport, “in their words, ‘to shoot it up,’” Atlanta’s police chief said.

“This individual did have a semi-automatic weapon, and this individual was mentally challenged. And when you have those combinations together, it can turn out to be deadly,” Atlanta Mayor Andre Dicke...

This shooting has raised concerns about gun violence and safety at U.S. colleges, adding OSU to the growing list of educational institutions impacted by shootings in recent months and years.