It was also notable for including the first untethered spacewalk.
This required the two transferring cosmonauts to spacewalk from one vehicle to the other.
Space travelers have spent over 41,790 man-days (114.5 man-years) in space, including over 100 astronaut-days of spacewalks.
Mastracchio was the ascent/entry flight engineer and participated in three of the four spacewalks.
Their spacewalk lasted 4 hours and 17 minutes.
This work was accomplished during a total of five spacewalks in five consecutive days.
The spacewalk lasted 6 hours and 21 minutes.
An unplanned spacewalk was successfully performed to repair the array.
