srsly
Do we know what kind of weapons the perps were using?
Not sure. Reddit, Twitter, NBC, ABC, FOX, CBS, and CNN all seem to have about the same track record reporting details. Reports I remember said that the shooters were seen with both handguns and "long guns". Obviously they also had grenades and at least one more cooker bomb. Whether it was intended to smoke or not is unclear, but I do also recall the guy saying that it looked like they tried to throw it at police but it only went about 20 feet or so.
Also, in case you missed it, this is after they cold-bloodedly murdered the MIT campus cop, hijacked a car, held a hostage (the car owner) for 30 minutes, let him out, robbed a convenience store, were sighted, and chased to where what I described occurred.
I assume he didn't drive far before getting out, but I have not looked at a map to get my bearings on all this. It was just too much info all night. I intended to go to bed at 11PM and decided to surf while Windows updated. I caught the MIT story and found a link to the subreddit where I found more links than there have ever been before. At one point I had three news feeds running, 1 with sound and two for text scroll, and the scanner, and reddit, and imgwhereever, and twitter, and wiki, and FB, and finally AT. Just insane changing stories all night. Pure chaos. I did my best to keep up and glean the good info. Even cops were providing bad info. Before I knew it the sun was shining on me keyboard.