EXPRESS Pallet Controller Assembly (ExPCA) Extravehicular Activity (EVA) #42: EV1 Peggy Whitson and EV2 Jack Fischer performed the ExPCA EVA today. At the start of In-Suit Light Exercise (ISLE) Prebreathe, a water leak was discovered at the Service Cooling Umbilical (SCU) for Fischer’s suit. The leaking SCU was subsequently disconnected and the functioning SCU was …