Signal Oscar Zulu

Located in the North-Eastern area of the Fallout 3 Map, southeast of Relay Tower KX-B8-11, northeast of the Temple of the Union, and far south of the Republic of Dave. When activated by a switch on a transformer below the tower, it broadcasts a plea for medical assistance for the son of Bob Anderstein. This is one of nine Drainage Chambers with a ham radio signal. The message repeats:

If anyone can hear this, this is Bob Anderstein. [My] family and I have taken refuge in a drainage chamber not too far from a radio relay tower outside of D.C. My boy is very sick, needs medical assistance. Please help if you can. We're listening for your response. 3950 kilohertz.

To the South-East of the Relay Tower is a car on what remains of a road. Go past it down a hill, then skirt around the base of the cliff to your left, and you will see a sewer grate. Within are two small chambers. One is a living area with two adult skeletons (male and female) along with food, tin cans, a Toy Car, a Lunchbox, Surgical Tubing, and a Crutch, and other assorted supplies (mainly medical). In the opposite chamber, there is a burnt-out terminal and the Ham Radio used to broadcast the distress signal, as well as a Pre-War Book, a D.C. Journal of Internal Medicine, and Purified Water.

Oddly, while there are two adult skeletons, medical supplies, and toys, there is no small skeleton. But there is a small rubble pile right outside the sewer grate, in an area which otherwise does not have any rubble piles. The reason for the lack of a small skeleton is because since the player cannot physically kill children in the game the devs probably did not add a child skeleton model.

Except in certain places like Spring Vale School.