Lynda Carter tells The Washington Post she was alone in a boat when she saw the body Wednesday. She says she didn't have a cell phone with her, so she yelled to some fishermen and asked them to call police. Carter waited until rescuers arrived and directed them to the body.
District of Columbia police say the body of 47-year-old Helen Johnstone of Washington was found floating on the river Wednesday. The medical examiner's office has not declared an official cause of death.
Carter says she "did what anybody would have done."
