I heard at least two calls on the scanner last night for people firing guns into the air along with all the fireworks calls. As in, the caller reported seeing someone firing the gun, not "I heard fireworks and can't tell the difference." So, it could have been either. It happens every year.

Thing is, I don't remember hearing more than sporadic fireworks on NYE until 2000. Seems like that year and every year after it sounds like downtown Beirut circa 1983.