Sam Fisher has to sneak into a building which terrorists and hostages are holding up to recover a valuable piece of data. You'll have to sneak by the terrorists, and if the hostages see's you, some of them will be quiet thinking that you're there to help them (when your mission calls for you to ignore them). Yet some of the hostages will be loud, yelling "Help me!" or something, and you'll have to knock them out before they alert the terrorists. Not that it's really a big deal if the terrorists are alerted of your presence, then they'll start killing the hostages. Lambert will be mad, but he won't call the missoin off. Instead, as the terrorists start killing the hostages whether they are alerted of your presence or not, then team Rainbow will burst in methodically and neutralize all the terrorists (and Sam Fisher as well). You'll have to dodge the Rainbow team members, but you can't really hide from them because they got thermal imaging and night vision and such. You just gotta run as fast as you can or something. If they go to a room to clear it and you're in the room, they'll drop you. You just gotta maybe take a hostage as "hostage" and exit the building holding that hostage in your arm.