[What does he mean, these are trustworthy faces!]

Well, we should probably get a feel for what we're working with. So how about we have you try to sneak up on one of us?

[Leo already knows he won't be successful (or he and Donnie are really bad at their jobs), but the point is to get a feel for how Accelerator moves and what would make this the easiest for him.]

Wanna play target, Dee?