Tower invasion: force field keep teem in, Coulson and the women out.

[ladyhatshepsut.livejournal.com]

I'm trying to find a story where a (mercenary? military?) group invaded the Tower and throws up a magnetic force field around the building so no one can escape.  I can't remember if there purpose is robbery (Starktect?) or kidnap(Bruce?).  Coulson, Pepper, and maybe Darcy, Jane, Maria were out and maybe got stopped by traffic so they're walking back to the Tower but find they can't get in.  Anybody recognize this story?  That's all the detail I can remember at this time.