Oliver Queen: All right, if Chase is here, he's not on this level. It... it felt like an explosion, but there's minimal damage.
Felicity Smoak: It was an EMP. A burst of electromagnetic radiation. Everything in the Bunker with an electric circuit has been fried.
Oliver Queen: How do you know?
Felicity Smoak: Because the spinal implant that helps me walk isn't working. I can't feel my legs.