[cabojoe]

0835 GMT (4:35 a.m. EDT)

At 4:35 a.m. EDT, the third of four electrically driven bolts was tightened to connect the Port 3/Port 4 truss to the space station. That completes the minimum required mating of the truss and gives the OK for the crew to press forward with today's planned spacewalk. Joe Tanner and Heidemarie Stefanyshyn-Piper are suited up in the airlock and set to begin the EVA.

The station has now grown from 432,000 pounds in mass to 467,000 pounds. This is the first large expansion of the complex since November 2002, just before the Columbia accident suspended station construction.

[RightWhale]

spaceflightnow.com
1418 GMT (10:18 a.m. EDT)

Tanner has lost a bolt, washer and spring from part of the launch lock he was removing from the rotary joint.

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Something like this happened to me as I was disassembling my pistol. The spring was found, but the bolt object is somewhere out in the swamp.