Occupation of Alcatraz manhood." Some 50 of the Alcatraz occupiers traveled to the East Bay and began an occupation of an abandoned and dilapidated Nike Missile installation located in the hills behind the community of Kensington in June 1971. This occupation was ended after three days by a combined force of Richmond Police and regular US Army troops from the Presidio of San Francisco. Moreover, the Alcatraz Occupation greatly influenced the American government's decision to end its Indian termination policy and to pass the Indian Self-Determination and Education Assistance Act of 1975. The Alcatraz Occupation led to an annual celebration of the rights
Escape from Alcatraz (triathlon) foot race, but by making it an out-and-back run rather than a one-way course, became known as a "Double Dipsea". The course has remained the same over the years and celebrated its 35th anniversary in 2015. Participants are limited to members of the Dolphin Club and The South End Club. The Dolphin Club is the host and sponsor of the event. The annual public Escape from Alcatraz triathlon, organized by IMG, now takes place in early June. The current course consists of a swim starting near Alcatraz Island, a run from the bay to the transition zone at Marina Green,