(Flight Day 6) During flight day 6, the joint crews continued the activation of the new crew quarters. The last of the major transfer items, the Fluids Integrated Rack (FIR), Materials Science Research Rack, and the Minus Eighty Laboratory Freezer ISS 2 (MELFI-2), were transferred from the Multi-Purpose Logistics Module (MPLM) Leonardo. Astronauts Danny Olivas and José M. Hernández answered some questions submitted on YouTube and Twitter. Olivas and Christer Fuglesang also prepared for the second EVA and "camped out" in the air lock at a lower pressure to help get ready for EVA 2 on flight day 7. September 3 (Flight Day 7 – EVA 2) On flight day 7, Danny Olivas and Christer Fuglesang performed the second spacewalk of the STS-128 mission. Olivas and Fuglesang installed and connected the new Ammonia Tank Assembly (ATA), and also performed two get aheads. The get ahead tasks included installing protective lens covers on the Space Station Remote Manipulator System (SSRMS) End B cameras . Once the ATA was installed, the tank was integrated into the cooling loop. While Olivas and Fuglesang were outside, the rest of the crew continued on transferring items to and from both the shuttle mid-deck and MPLM. September 4 (Flight Day 8) The first part of the crew day was spent off duty. The crews enjoyed a meal, took a crew photo and took part in a PAO event. More transfer was completed by both crews. The space station crew calibrated the Oxygen Generation System (OGS) H2 sensor. Timothy Kopra and Nicole Stott continued their hand over activities, helping Stott who is taking over from Kopra. Danny Olivas and Christer Fuglesang got their space suits ready for the third and final space walk. The pair spent the night in the Quest Joint Airlock, at a lower pressure of 10.2 psi instead of 14.7 psi. September 5 (Flight Day 9 – EVA 3) During flight day 9, Danny Olivas and Christer Fuglesang performed EVA 3. The pair completed all tasks that were to be done, including installing two GPS antennas and deploying the Starboard 3 (S3) Payload Attach System (PAS), a new Rate Gyro Assembly (RGA) 2, and routing of Node 3 Avionics cables. The joint crew also completed more transfer, mostly transfer for return to Earth in the MPLM and Space Shuttle mid-deck. The ISS crew also replaced a bolt on the Common Berthing Mechanism (CBM) so