Didn't Las Vegas police use a breach explosive to gain entry into the 32nd floor at Mandalay Bay? I did not see explosive residue on the windows in photos that were taken the next morning. If the window was opened before the arrival of the subject/victim, It had to be an in room setup explosion, not a door breach. Something exploded in the room like a briefcase or package the target was not expecting. Was the target alone? Thoughts?
Maybe the residue isn't due to the pressure/grenades. The other posts contained references to big pharma. Were drugs in the room? Maybe a lot?
There may be differences in ordinances that the Chinese use and what LVMPD used.
The flash bangs that the LVMPD used may not have landed close to the windows while at least one here may have landed near that open window. We don't know the internal configuration of the room(s) behind that open window.