Luckily, this had been one of the days where Tony Stark wasn't sleeping in and had no company in his bedroom. He'd been several floors down from his penthouse apartment, working on things in his workshop.
Of course, when the crash came, he booked it up there to check out the damage, and immediately regretted every single one of his decisions that morning. Especially the really large coffee he'd had.
Most of the apartment was ripped to shreds; shattered metal and flames and Tony made out one really really big dragon foot where his bed used to be. That's when he dashed out a quick post to the internet and started sounding all the alarms.
It was crisis mode time. Big dragons were definitely crisis mode time.