"Well, here's the thing," says Finn. "You actually CAN'T go down..."
Where, a few moments ago, you entered this stairwell, there is now an enormous metal girlle blocking the way with a sign saying 'out of order'.
"And you probably want to get up and away from the small army of SWAT guys coming up the stairs at you..."
There is a small army of SWAT guys coming up the stairs at you... about the sixth floor... seventh...
"Oh, and from above as well," adds Finn.