Its astronauts Steve Swanson and Richard Arnold undertook the six-hour, seven-minute spacewalk required to install the truss.

BBC: Spacewalkers bolt in power unit

One recent morning, he touted his environmental record on a bluff overlooking the ocean in Santa Monica, but also made sure the few dozen supporters there, knew he was the one who'd opposed Arnold Schwarzenegger's agenda back when State Controller Steve Westly was helping the Governor.

NPR: Democratic Gubernatorial Hopefuls Struggle in California