Looks like we've got some new team members. Welcome aboard, ladies and gentlemen, but try to save the introductions for later - we've got work to do.
Normally the Feds handle hostage situations on American soil, but apparently we've got some very high-profile foreign nationals in there - among others, the French prime minister's daughter. As a result, Paris and Brussels have both insisted that RAINBOW run the extraction instead. Washington's not arguing - they just want those folks out.
One more thing: try to keep the collateral damage to a minimum. This is a museum, after all, not a shooting gallery.