Accelerator and Kakine who were flying parallel down the road suddenly changed paths and chose the shortest route to smash into each other. A four-lane crossroad was blocked completely due to the clash between those two. Nobody complained, and nobody dared to complain. Everyone here had the instinct that if they dared to speak up they would die.
The silhouettes of the two swept past each other.
A few seconds later, the air exploded and a shock-wave rang out.

Toaru Majutsu no Index vol.15 ch.5 pt.3