Lock and Load

First things first, head over to the bounty board at the Lunar Landing Station. You'll find this mission right next to where you picked up "To the Moon." Make sure you're around level 23 for this one.

Once you accept the mission, make your way to the console and hit that button to start loading the Loaders onto the conveyor belt.

Now, here's the tricky part: enemies are going to swarm in, trying to wreck your precious Loaders. Your main focus should be on the enemies getting too close to the belt first. Once they're dealt with, you can take care of the stragglers.

After all the Loaders are loaded up, clean up any remaining enemies. Then, head to the highlighted console to fire them into the Moonshot Cannon.

The best part? You don't have to trek out to the moon's surface to check on them. Just head straight back to the bounty board to wrap things up.