Lynnette Fromm Attempts to Assassinate President Gerald Ford

"Red" was committed to making Manson proud of her environmental work, and when she found out that President Gerald Ford was coming to town, she stuck a .45 Colt automatic into a leg holster and headed out to Capital Park.

As Ford came through the crowd, Squeaky "Red" Lynette Fromme pointed the gun at Ford and was immediately taken down by the Secret Service. She was charged for attempting to assassinate the President, although it was later disclosed that the gun she carried did not have bullets in the firing chamber.

http://crime.about.com/od/murder/p/squeaky.htm