Friday was able to help out a great deal. She had Tony's biometrics and sure, he wasn't the easiest to find at the moment but once she was given permission to launch the iron legion (when Captain America put on his failsafe codes), they were able to triangulate where Tony was being held.

"I see him," Natasha whispered, crouching by a vent near the ceiling of the basement Bucky was stalking around a tied up Tony and yelling in Russian at him. "Your friend's accent is pretty good. Stark's pretty bad off."