Use a Thunderwave Grenade

Luckily, Rahmi had just the tool for the job. Gently opening the window, she primed a grenade with her body's electrical current. The idiotic guards were oblivious as she crept into the warehouse, grenade in hand. Once she was within range, she simply rolled it into their circle.

"The fuck is that?" One of them dumbly asked right before the grenade went off. The discharge caught all five of them, stunning them into unconsciousness. Voltage loved it when the villains were stupid!

With them dealt with, she surveyed the area. The walls were lined with crates, stacked as high as the ceiling. There seemed to be two offices on either side of the warehouse, as well as another large room straight ahead. From the sounds of it, there was someone moving around in the large room, though luckily Voltage's entrance had not been noticed. There were also the guards Voltage had just incapacitated. They might have some valuable information on them.