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Mark Thomas Vande Hei

 Total EVAs:  4
 Total EVA time:  26h 42m

No. Date Together with Time Main tasks and notes
 1  05.10.2017  R. Bresnik  6h 55m
They replaced one of two Latching End Effectors (LEE) on the station's robotic arm, Canadarm2.
 2  10.10.2017  R. Bresnik  6h 26m
The spacewalkers lubricated the newly installed end effector and replaced cameras.
 3  23.01.2018  S. Tingle  7h 24m
The objective was to replace one of two redundant latching end effectors (LEE) on Canadarm2, the station's robotic arm, which has experienced some degradation of its snaring cables.
 4  16.02.2018  N. Kanai  5h 57m
The astronauts moved a Latching End Effector (LEE), or hand, for the Canadian-built robotic arm, Canadarm2, from a payload attachment on the station's Mobile Base System rail car to the Quest airlock. They also moved an aging, but functional, LEE that was removed during a January 23, 2018 spacewalk from its temporary storage outside the airlock to a long-term storage location.