"Tank'll hold together just fine," Kaylee promised, with more confidence than she was actually feeling. The insides of the tank were working just shiny now, but the outside was still rickety. But if you didn't have at least some faith in the ship you were flying (tank you were driving, in this case), then it was bound to fall apart on you.

The mechanic paused only a moment longer before nodding and patting Billy's arm. "If it'll make you feel better to tag along, I won't mind it so much, long as you promise that if it gets too rough you'll get yourself out of trouble, alright?"