What I think is likely “fake” is:
1. 10 fully automatic weapons in the room
2. Fired over 700 shots.
But yes, it “could be true”. However, the media shouldn’t be reporting what “could be true”.
Fired 700+ rounds over several minutes unopposed is very likely true. Agree 10 full autos unlikely, probably semis or mostly semis, but I would attribute that to journalist idiocy rather than intentional “fake news.” But I thought the smoke detector angle was being doubted.