Spacewalkers Robert Satcher Jr. and Randy Bresnik have prepared the high pressure gas tank for removal from the Express Logistics Carrier (ELC) 2 on the Starboard 3 truss segment. Space station robotic arm operators Leland Melvin and Barry Wilmore are grabbing it and will move it to the Quest airlock.
Bresnik already has moved the two MISSE 7 experiment “suitcases” from Atlantis’ payload bay and soon will install them on ELC 2.
At an elapsed time of an hour and 12 minutes, the spacewalk is about 20 minutes ahead of schedule.