briefing. The crew then got to work with initial transfers of equipment and supplies. Spacesuits were among the first items to go to the ISS. Station crew member Noguchi also transferred high-priority JAXA experiments to the Kibo module. Sellers and Expedition 23/24 astronaut Tracy Caldwell Dyson got to work on their joint task to relocate the ICC-VLD cargo pallet. The duo used the station's robotic arm to transfer the pallet from Atlantis to the station's mobile base system to prepare for the spacewalks. In preparation for the following day's spacewalk, all Atlantis' crew members gathered for an hour-long spacewalk procedure review. Mission Specialists Reisman and Bowen spent the night in the Quest airlock as part of the overnight campout procedure to help them get prepared for the spacewalk. The crewlock was depressurized from 14.7 to 10.2 psi. The depressurization was required to avoid the formation of nitrogen bubbles in the astronauts' blood, which could result in decompression sickness. May 17 (Flight Day 4 – EVA 1) After the morning wakeup call, Mission Control CAPCOM Shannon Lucid informed the shuttle crew that no detailed flight inspection would be required on the next day. However, the crew were requested to utilize that time to do inspections on various sections of Atlantis that were not inspected on flight day 2. Flight day 4 saw Mission Specialists Garret Reisman and Steve Bowen perform the first of three planned spacewalks. The pair installed a spare Space To Ground Antenna (SGANT), a new enhanced tool platform for the Special Purpose Dexterous Manipulator (SPDM, also known as Dextre) and released torque on the six new batteries for the Port 6 (P6) truss segment. Expedition 23 Flight Engineer Creamer helped the duo with their suit-up preparations. Mike Good joined STS-132 Pilot Antonelli, the intravehicular officer, to assist during the spacewalk. Mission Specialist Sellers and station Flight Engineer Caldwell Dyson operated the robotic arm. Throughout EVA 1, Commander Ken Ham oversaw the extravehicular activities. During the spacewalk, several problems were encountered, the first of which was during installation of the SGANT. A slight gap was observed between the antenna dish and its mounting pole. The spacewalkers loosened the bolts and used a higher torque setting, which managed to close the gap to a smaller width. The launch locks were left on the SGANT to allow engineers on the ground to determine if the gap was acceptable, or if more