NASA International Space Station Spacewalk Live Stream: Watch The Maintenance Mission Here [VIDEO]

Update 12:13 p.m. EDT: NASA reports Swanson and Mastracchio have successfully completed the spacewalk and replaced the unresponsive MDM at 11:32 a.m. EDT. Update 10:32 a.m. EDT: Swanson and Mastracchio have removed the faulty backup MDM.