Police caught up with the 28-year old man and found a realistic-looking "a black CO2 BB/pellet-style gun in a backpack."
From the article:
As police handcuffed him, they say he became combative and kicked an officer in the leg. The officer was not injured.
After questioning him downtown, investigators say they determined the man did point the gun at the bus.
He was booked for two counts of aggravated assault, one count of battery to a law enforcement officer and for possessing a firearm after a felony conviction.
A police spokesman did not know the motive for the incident.