Season 2: Catch Me If You Can

Xavier arrives at the CIA bunker. Sam tells him to go down to SUBLEVEL 20
to download some secret files from a server.The only catch is that he has to do
it without breathing because Sublevel 20 is a “NO OXYGEN FLOOR”, so
inaccessible by humans.! But Xavier can use his new beasty powers which
apparently include the ability to go without oxygen, so Xavier complies.