On May 27, 2011 American astronauts of the STS-134 crew Gregory Chamitoff and Michael Fincke performed a seven-hour, 24-minute spacewalk.
This was the final spacewalk conducted by space shuttle astronauts. It also was the last of the four spacewalks for the STS-134 mission. The space walkers placed the shuttle's 50-foot inspection boom on the station's truss backbone to extend the reach of the lab's robot arm.
It was the 248th spacewalk U.S. astronauts have conducted. It was Fincke's ninth spacewalk. It was Chamitoff's second spacewalk.