High guys make terrible shots. [He wishes he didn't know that as well as he did- he worked with enough of them.] But I would think he still needs to keep it out just in case.

Just ah... don't aim until we say so. So you can be sure. [Because it's better than letting him be bitten by a spider.]

[He tosses a torch down the stairs, and then walks behind them to put another one of those expandable barriers.]