theoretically deflects nuke

That was why Academy City’s goal was not to create espers. The espers were nothing
more than a type of litmus paper. It seemed what was truly important was why espers
had been born and what mechanism brought them about.
Yet the boy before her eyes was different.
That boy could alter all vectors be they motion, heat, or electricity, so he would not be
injured even if he were directly hit by that last resort of a nuclear missile. He would just
reflect the shockwave that would blow everything way, the heat that would scorch
everything, and the neutrons and radiation that would kill everything.
He was Accelerator, Academy City’s strongest Level 5.

- Toaru Majutsu no Index Volume 3, Chapter 2 Part 5