Fuck, it should have expected that. SecUnit lunges forward to grab for Jack's arm to brace him from breaking his nose on the ground. It's cursing itself under its breath for not expecting this, no matter the unbroken state of John's leg. It's lucky the human isn't going into shock.

So in a neatly practiced gesture it gets John's arm around its shoulders. Getting a touched is a torture it's going to have to just fucking put up with.

... Is John even going to be able to drive? Shit.

It'll worry about that when they get there. For now, it clenches its jaw and says, "Lean your weight on me."