He doesn't like the sound of those coughs, even if it's probably to be expected in a fire this large. There are too many floors for the fire department to get to all of them and if Gwen's right, there's one about to potentially make things worse.

"I'll clear it, you get some air and then check the East stairwell for anyone that needs help getting down."

"Tony?"

"Scan shows two people on twenty four and they came prepared with masks. Looks like our bombers are after something in the maze."

"Meet me up there." He slips through the stairwell door and moves down a long hallway, checking doors as he goes. The smoke is thicker up here and he immediately feels his throat tighten.

Tony's voice cuts through the silence. "Shit, half of twenty just collapsed. Give me a second to get some of the firefighters out of the way."