The focus of spacewalk No. 2 of shuttle Atlantis' mission is releasing launch locks and restraints that have held the Solar Alpha Rotary Joint in place on the new power truss. In this helmet-cam footage, spacewalker Dan Burbank removes one of 14 such locks scheduled on this EVA.
Source: NASA TV (11 min 17 sec QuickTime 6 file)
Download this clip to your hardrive.
(Windows users right-click this link. Mac users control-click this link)