You'll find his corpse, along with many Fire Ant corpses, strewn across the half-burning first floor of their house. Head towards that building and inside, where you'll encounter a grizzly scene.Д«ryan Wilk's father is dead. Remember when Bryan told you that his house is the one with the billboard on it? Well, you'll see a billboard hanging on a building next to a shack you can't yet enter. Thereafter, turn around so that your back is facing the diner and look ahead. Here, you can speak with him in his preservation unit or raid the nearby diner's Nuka-Cola machine for some Nuka-Cola and Nuka-Cola Quantum. You could have run into Bryan anywhere, but you'll want to locate him in a preservation unit adjacent to a burned-out diner (see the screen below).

Your first objective here is to find young Bryan's father. Long-range weapons are key here if you have any hope whatsoever of surviving. Naturally, this means melee weapons, shotguns and anything that does close-quarter damage should be avoided at all costs. And last (but not least) is the Warrior, who is both aggressive-as-hell and armed with an equally devastating flamethrower attack. Next up is the Soldier, whose flamethrower attack can devastate you. The Fire Ant Worker is the most innocuous of them all, takes little damage to kill, and lacks aggression. There are three types of ant you're going to run into. You've no doubt noticed the damage these pesky foes can do as you were looking for Bryan Wilks in the first place. Wilks needs your help to rectify this situation, and naturally, you're the man for the job. You see, mutated Fire Ants have all but destroyed any living vestiges in and around Grayditch, and apparently there are now only seven survivors. His name is Bryan Wilks, and he's in a bit of a bind. You'll have to roam around the area for a bit until you run into a little boy wandering the Wasteland by himself. In fact, you'll likely find this one early in the game, since the location of the side quest, Grayditch, is a mostly-abandoned settlement of previously-standing buildings southeast of Megaton. To find the Those! side quest, you're going to have to do a little exploration. Eliminate all five Nest Guardians from the Ant Queen's Hatchery.

Investigate Marigold Metro Station and remove the source of the Fire Ants.

Fallout 3 metro map