On October 20, 2017, American astronauts Randolph Bresnik and Joseph Acaba performed a spacewalk. The astronauts installed a new high definition camera, replaced a degraded camera on a recently attached robot arm grapple fixture, finished lubricating the mechanism and carried out a variety of other tasks. The EVA (extravehicular activity) lasted 6 hours and 49 minutes. This was the fifth spacewalk for Randolph Bresnik and the third for Joseph Acaba.