Chloe in a car, apparently not terribly worse for the wear is a sight for sore eyes. He almost makes a joke of it-- and then there's the crack of gunfire as he swings about to catch sight of Nate climbing to a bloody window ledge, feet scrambling at the wall. Two limping strides down the road and the angle opens up enough that the man with the gun aimed toward Drake is clear enough.

So Charlie levels the Walther, fires, and that's that.

"Oi!" He doesn't bother with holstering the gun as he calls to Nate. "Quit messing about!"