Jet Force Gemini
SS Anubis: Passageway
You have to fly up to the Passageway door once you get the jetpacks. Grab the sniper rifle cap + and keep going. Shoot the sniper and fly up to the yellow ledge. There's a lot of flying from ledge to ledge. Try to shoot anything you can before flying to the next pad. You'll eventually hit a big water room. Through the next set of doors is Midge who gives you the spaceship fin. In the next tall room is a family of 6 tribals at the top. Fly up and grab them. Now fly all the way back.
The Floyd mission with the circuitboards will give you the earplugs. Jet Force Gemini Walkthrough