The careful handoff of the Port 3/Port 4 truss from one robot arm to another is accomplished. The space station's robot arm gets a firm lock on the truss, allowing Atlantis' arm to released its grip on the structure. The truss is left in the hand of the station's arm for installation to the outpost the next day.
Source: NASA TV (8 min 29 sec QuickTime 6 file)
Download this clip to your hardrive.
(Windows users right-click this link. Mac users control-click this link)