Sombra's EMP, fighting through tear gas

The smoke cleared to reveal a massive metal door with a small rectangular
console set in the wall beside it. Sombra quickly hacked the console; when the
door opened, they heard a hollow snap-hiss sound.
Reyes pushed Sombra aside. “Tear gas . . . projectile rail guns.”
The canister zoomed into the cramped stairwell landing, ricocheting off
the tight walls with a plume of toxic exhaust. Sombra staggered ahead into
the hallway, which was already filling with a phalanx of troopers wearing gas
masks. Sombra’s eyes collapsed into a tight squint as she activated some sort of
weapon—concurrent waves of purple light burst from her body in a wide crescent,
rippling down the hallway in an explosion of violet. The troopers stopped cold,
jostling their rifles as they pulled the triggers in vain.
An EMP. Clever.
Reyes seized the opportunity to blast the troopers, who could only stare in
horrified awe.
While Reyes dispatched the guards, Sombra hacked the building’s ventilation
system to initiate a complex-wide air evacuation and recycling. An electronic
rattle echoed through the halls as the noxious vapors were removed. Sombra
turned to see Reyes maintaining a vigil over the recently departed.

Overwatch: Code of Violence, pg 13-14
https://overwatch.blizzard.com/en-us/media/stories/code-of-violence/