Right, we've established the right thing to do is get yer ass on the ground as soon ass possible without crashing due to haste. But....what to do once there? Bear in mind my comment that every evacuation results in broken bones, at least one serious injury and many minor ones (broken wrists and other bones). You have, say, a fire warning going, with no other indications of fire- no reports of hot floors, external smoke from the tower......what to do? I think sit on your hands for a moment, get reports from the cabin and ATC and fireman if poss, and hold your horses.