You can get this mission by talking to Laggins just outside of Ellie's Garage in the Dust. This is a rather fun missions as everything in it is a reference to the movie Top Gun. He will send you to a Buzzard Pilot Training Camp to collect Volleyballs and Jet Fuel. To get to the Goose's Roost (Goose dies), you'll have to approach from the North and hit a ramp with your boost. This will launch you onto the Roost.
When you get there, take it slow because there are quite a few bandits and a few Buzzards around too. Killing a Buzzard will get you an Optional Objective so do this if you have the chance. I'll point out an opportunity later that is ideal.
After landing, start heading to the right. You'll end up on a catwalk that wraps around the base proper and if you jump over the railing, you'll land on a lower level. On the lower level will be a small shack that is hanging over the edge. Inside this shack will be your first Volleyball.
Be careful here because there is a spawn point not far from where you are now. It will spawn primarily Psychos and Midgets and with it's proximity, they can be quite dangerous. Grab the Volleyball and kill these guys, then head up the stairs. Walk past this first hanger on your left and into the base proper. You'll be attacked by a few Marauders from directly ahead of you and just behind them will be a beat up hanger with two objectives in/near it. Kill the Marauders in front of you and then get inside the Hanger.
This is a fantastic staging spot because nobody is going to come up from behind you. You can easily retreat out of the building if someone comes in and you are protected from almost every angle while you are inside of it. From inside, kill any more Bandits that are immediately around you. If you look directly above you at the ceiling, you should be able to see a Volleyball through a crack. You can jump up from inside to grab this. After that, find the objective just outside. Run over, grab the Fuel Can and then retreat to your cover.
After grabbing this Fuel Can, a couple of Buzzards will spawn. Killing one (or both) of them from here will be very easy since you've got a lot of cover over your head. You can step out, shoot a couple times and then step back to be well protected. If you have the ammo (which there's more ammo in or around this building), I would kill both of them so you don't have to worry about them as you move further through the base.
More Bandits will start to move in on you so take the time to get rid of them and then you can continue further into the base. You'll follow the right side of the base and go down a ramp with large struts sticking out of the ground. You'll come to another open section of the base. If you go left, there's a chute that leads up to the top of a round storage container. Near the base of this cylinder will be another Fuel Can. From up here, you can clear the enemies below from relative safety.
Clear the enemies to the East, drop down and collect the Can. If you have a Sniper Rifle and too many enemies, back up to the West where the ramp leads back upwards and you can take cover behind one of the struts. If you look through the holes, you'll be almost completely concealed while being able to snipe enemies in the distance.
When you move forward, look for the two story hanger on the left side of the base. From here, work on the enemies in the area. You'll again be well covered from above and in almost every direction. You can step out a little and attack and then step back as before. When it's relatively safe nearby find the watch tower that has the Volleyball on it. From there, trace it to the left over the round roof and down to the Buzzard Pad. Go up the stairs to the pad, jump onto the roof, onto the propane tank and then you should be able to reach the Volleyball.
Take that, drop off and then run to the last waypoint to collect the last Volleyball.
Burn the Net
After taking the last Volleyball, don't leave because you'll have some new objectives. You'll also be attacked by a Goliath so head back a little into the shack for cover. Take out the Goliath and then head up the stairs to find the Volleyball Net. Get up close to it and activate it to cover it in fuel. Now back up and shoot it with a fire weapon to ignite it.
Immediately retreat after you've done that because new enemies are going to appear. There will be three Shirtless Men that you'll have to kill that all look like Val Kilmer (!). You can back down the stairs and use the lip of the stairs as cover to attack these men or go forward for one of the buildings to fight from. Either way, find a safe spot, take out these three specific guys. When you've killed them all, jump off the cliff, find a Catch-A-Ride and return to Ellie's Garage to turn in the mission.