On this weeks' W5: An investigation into alarming incidents that seem to be happening more and more in big cities -- tactical teams responding to a crisis like a gunman at large or a hostage taking.
But in some cases, the calls are sophisticated fakes, a hoax by hackers.
It's happening so often now it has a name: swatting. Watch the episode in our player above.
Supporting documents and links:
Map of SWAT locations where 'Obnoxious' either pleaded guilty to, or SWATs we know about from speaking directly with the victims. Map by W5's Jasna Baric. Click here for a larger view of the map.
Provincial Court of British Columbia: "Obnoxious's" sentencing decision
Full transcript of Mir Islam's sentencing hearing, in 2 parts
Part 1
Part 2
Letter from Mir Islam to the judge, ahead of his sentencing decision, in which he expresses remorse
YouTube video of a live-streamed call by "Obnoxious" to the Grove City Police. WARNING: LANGUAGE