in the antenna-mast interface. They then removed the antenna's launch locks, leaving the antenna ready to operate. During EVA 2, commander Ken Ham provided photo and television support, and pilot Tony Antonelli served as the spacewalk choreographer. ISS crew member Tracy Caldwell Dyson also assisted with spacewalk preparations. EVA 2 marked the 238th conducted by U.S. astronauts, the fifth for Bowen and the third for Good. It was also the 145th in support of International Space Station assembly and maintenance. May 20 (Flight Day 7 – MRM-1 initial checks, transfers and off-duty) On flight day 7, the crew spent a few hours of off-duty time in the afternoon, but otherwise were largely focused on preparations for EVA 3. Earlier in the day, at 10:52 UTC, following leak checks, ISS Expedition 23 commander Oleg Kotov and flight engineer Alexander Skvortsov opened the hatch to the MRM-1 module. They wore eye and breathing protection as a standard precaution when entering a new module. Kotov reported that some metal filings were drifting around inside the new module as unpacking activities gathered pace, although initially he reported the interior of MRM-1 looked clean. Flight controllers both in Houston and Moscow worked with the crew to develop a technique for safely removing the floating debris. At 12:25 UTC, shuttle crew members Ken Ham, Tony Antonelli, Piers Sellers, and ISS flight engineer Tracy Caldwell Dyson, talked with the Associated Press, Fox News Radio, and CBS News. Ham also joined in with past and present members of Mission Control to recognize Lonnie J. Schmitt as the first flight controller to reach his 100th shuttle mission. During the day, Ham, Antonelli and Sellers transferred equipment, supplies and experiments between Atlantis and the ISS. Mission Specialists Mike Good and Garrett Reisman prepared for EVA 3, configuring tools and preparing suits and the Quest airlock. Ham, Antonelli and Sellers also joined them to review the procedures. As part of the campout procedure, the two spacewalkers spent the night in the Quest airlock, with its air pressure reduced to 10.2 psi. May 21 (Flight Day 8 – EVA 3) On flight day 8, Mike Good and Garret Reisman completed EVA 3, the third and final spacewalk of the STS-132 mission. The pair connected a pair of ammonia jumpers on the P4/P5 truss segment, before continuing on out to the end of the P6 truss. Once at the P6 truss, Good and