He took the gun away from Sara Jane Moore.
The location here is near where Sipple helped keep President Gerald Ford from being assassinated by Sara Jane Moore.
Oliver William "Billy" Sipple (November 20, 1941 – February 2, 1989) was a decorated US Marine and Vietnam War veteran widely known for saving the life of US President Gerald Ford during an assassination attempt by Sara Jane Moore in San Francisco on September 22, 1975. The subsequent public revelation that Sipple was gay turned the news story into a cause célèbre for LGBT rights activists.