[quote=@DrewVonAwesome]
Well basically by the time they get to NYC presumably Tony will be available.  He'll just need a little healing up in SHIELD HQ but he'll be back to work.  Slightly pissed and working on a new Iron Man suit but still he'll be there.
[/quote]

S.H.I.E.L.D New York basically. As their HQ is in Washington :P

I think though you kind of want to go Hulkbuster route we'll wait a while for Iron Man and Hulk too fight to the point he realizes he needs one :P