A young woman was the focus of former Navy Officer Paul Marcus inside Building 197 on Monday morning.
"She looked the shooter in the eye and he fired point blank at her," he said.
Officer Marcus just yelled at her to run - then she looked up at him.
"She had a lot of blood coming from her -- she had been shot with a shotgun blast to the head and to the back of hand from trying to shield the shot," he described.
Marcus said he and a friend raced the wounded woman to the base clinic and repeatedly called her father:
"I said, 'Where are you, I need to get you to your daughter,'" he said.
By phone, Marcus helped the woman's father navigate through the city to the chaos at Navy Yard, eventually reuniting him with his daughter - who survived.
ABC7 News obtained the police report that detailed the number of wounded individuals - a 24-year-old woman, a 56-year-old woman, and a 43-year-old woman.
A D.C. police officer was also shot when he confronted the gunman. Sources say he is recovering from a severe leg wound.