Star One Credit Union. It has four branches in California's Silicon Valley, but its approximately 80,000 members can access their accounts through a nationwide network of more than 25,000 ATMs and 2,500 shared credit union branches in some 40 states. Star One offers membership to employees of selected companies, including such biggies as Lockheed Martin and Yahoo! Additionally, those who live or work in Santa Clara County, California, are eligibleThe Lockheed Missile Employees Federal Credit Union was chartered in October 1956 to serve employees of the new Lockheed Missiles and Space Division in Sunnyvale, California. Our doors opened in January 1957 when 1,350 member accounts were transferred from the Lockheed Aircraft Employees Federal Credit Union in Burbank.