There was a visual trigger... some could be seen in shot (a flash, a change of the split screen text etc.)
I think these are 5G activated tests.
Those attacks on train platforms recently - same thing, only directed... guess they refined the 'tuning'.
The guy in the plane, I think that was g forces. You black out from the blood being forced away from your brain - it's why fighter pilots wear g suits, to squeeze the blood out of their legs during hi g maneuvers.