At 7:14, Max Voelker tweeted:
BPD Motorcycle Police as well as NUPD patrolling campus already.
At 7:50 p.m., Brian D'Amico tweeted:
7 K9s outside my building, numerous SWAT teams, another spec ops cycle unit down the road. And that's just around campus.
S. Ryder shows all the police forces represented at Northeastern: