On February 21, 2015 American astronauts Barry Wilmore and Terry Virts performed the spacewalk to install wiring needed for two new docking mechanisms that will be attached later this year for use by Boeing and SpaceX crew capsules. The astronauts installed 8 cables with the total length of about 100 meters. The EVA lasted 6 hours and 41 minutes.

This was the second spacewalk for Wilmore and the first for Virts. With the completion of Saturday’s work, 120 astronauts and cosmonauts representing nine nations have logged 1,159 hours and eight minutes of spacewalk time, or 48.3 days.