Battery Work During Fourth Spacewalk

The joint crew of Endeavour and the station was awakened at 5:03 a.m. EDT by Pink Floyd’s “Wish You Were Here,” played for lead spacewalker Dave Wolf.Spacewalkers Chris Cassidy and Tom Marshburn will head outside at 9:58 a.m. to swap out all four of the remaining P6 truss batteries, a task that is expected to take about seven and a half hours. Two of the six original P6 batteries were changed out