"What other explanation could there be?" Aside from someone having the natural ability to do just that. Erik wasn't prepared to let slip this theory just yet, however. Combined with the information about being from Washington, he correctly suspected Steve to be a soldier or government agent. Since mutant kind were sort of in a tenuous position with the CIA in his time, he may just be asking for a fight when he could, for now, have an ally.

"There are some up ahead in the hall, but friend or foe? I couldn't say." He gestures to the light down the hall. "All I've found so far in the cells are remains, and there are some in this hall as well, with swords. Something took them down. I hope it wasn't because they were trying to free prisoners instead of clearing the way."