An Embarrassing Incident

Zone: Sholazar Basin

There's one little problem we have to solve before we head out. You see, I can't seem to find the keys to my flying machine. I've looked pretty much everywhere for them... maybe you can give me a hand. Only place I haven't looked yet is inside the lake. I'll even give you my very own air tank. It's almost empty, but it's got a couple of hits left.