railgun alleyway

“Sorry, sorry. It’s too late to stop me.”
Mikoto had already fired an arcade coin at the exit of the alley.
That was her Railgun.
That strike was fired at three times the speed of sound. It tore through the walls on
either side of the ally. A great noise and light blasted out onto the main road. She had
chosen a trajectory that would not directly hit the men in black, but the shockwave alone
was enough to knock down a few of them.
Gray dust filled the air.
Before the rain could knock that dust down to the ground, Mikoto stomped on the
stomachs of the men in black collapsed on the alleyway ground. This knocked them
unconscious and she then charged out into the open street.

- Toaru Majutsu no Index Volume 13, Chapter 9 Part 5