Expedition 53 Commander Randy Bresnik and Flight Engineer Mark Vande Hei wrapped up the first of three spacewalks planned for the next two weeks. The October 5, 2017, spacewalk was nearly seven hours long and saw the replacement of one of the two Latching End Effectors (LEE) on the International Space Station’s robotic arm.

Starting at 8:05 a.m. EDT (12:05 GMT) Oct. 5, the astronauts switched to suit-battery power on their Extravehicular Mobility Units to begin U.S. EVA-44.