did I miss something?
At the end where did all the Iron Man suits come from?
shareNot sure how in depth of an answer your looking for but...
Earlier in the movie after he's been working on the Mk. 42 we see it descend into his 'armor vault' where there's loads more armor. Basically, ever since the events of Avengers, his PTSD, insomnia and paranoia has manifested itself by him feeling like he needs to have a suit ready for any eventuality. In the 6 months since Avengers he's created 35 suits (that's less than a week spent on each suit).
That door to the vault had rubble piled on top of it after the attack on his home and it was going to take time to remove which is why he couldn't call them earlier. By the time he called them, enough rubble had been removed that JARVIS could open the doors and they could respond to the call.
Nillindeiel
Agent Hill: ...Then aliens invaded New York and were beaten back, by among others, a giant green monster, a costumed hero from the 40's.... and a god.
Agent Ward: I don't think Thor is technically a god.
Hill: Well...you haven't been near his arms.
~Agents of SHIELD; Season 1 Episode 1 "Pilot"