And what's more, you should be able to have decent visibility with your Pip-Boy's light. Thankfully, however, they're linear, so getting lost shouldn't be an issue. Making matters worse is that you're going to be in dimly-lit, hard-to-maneuver-in corridors. Combine their aggression, fast movement and ability to shoot fire, and you're going to have your hands full. And yes, just like their lesser friends, they can shoot endless streams of fire, thanks to Lesko's genetic mishap. Instead, you'll run into five of the Queen Fire Ants guardians, who are fast-moving and aggressive to say the very least.

There are no Workers, Soldiers, or Warriors to be seen here. You won't encounter any of your normal kind of Fire Ants here. Once you drop down into the hole, you can then go through a rickety old wooden door, which will lead to the Fire Ant lair itself. This leads to an adjacent corridor which, once traversed, will lead to a hole in the ground (you can only go right and towards the hole here going left will lead to a dead end almost immediately). Two 10mm Pistols can be found, as well as a Stimpak, Blood Pack, two Conductors, a Motorcycle Gas Tank, and more.Д«ut when you're ready to deal with the Queen Ant and her guardians, you'll want to go out of Lesko's lab via the other door in the small room, on the left side. Before heading out, though, search his makeshift laboratory. Agree to take out the Fire Ants by killing the five guardians near the Queen's location, and all should thereafter be well. You can speak to him any way you want, but you'll want to make sure you don't piss him off too much, that way you can finish the side quest. This maniac of a doctor is responsible for the mutated Fire Ants (an effect he's termed pyrosis). Head through the door on the left first, and you'll run into Dr. Heading back to the corridor you came down will lead to a dead end (thanks to an awkwardly-sitting train), so head to the right and continue up the corridor, where you will soon find another dead end with two doors, one on each side. But most importantly, you'll find William Brandice's Key, which you can use to open up a locked box back at his house in Grayditch. Search him thoroughly, and you'll find a Laser Pistol, some Energy Cells and other goods. You'll find William Brandice's body on the ground, who is one of Bryan's surviving neighbors (well, he's not surviving anymore). You'll find another connecting tunnel here, which you should examine after eliminating the Fire Ant threat in the area. Once back out in the tunnel, continue leftward down the rest of the tunnel until the train shortly thereafter ends (heading around to the other side of the train will result in you finding nothing whatsoever, so don't bother).

Fallout 3 those quest walkthrough