The first Expedition 66 spacewalk was completed after 6 hours and 32 minutes by NASA astronauts Thomas Marshburn and Kayla Barron on Internaitonal Space Staiton (ISS). Marshburn and Barron stowed the failed antenna after successfully installing an S-band Antenna Subassembly (SASA) on the Port-1 truss structure, NASA stated. They also completed get-ahead tasks on the Port-4 truss structure, involving resetting the torque on a set of bolts. This was the fifth spacewalk for Marshburn, the first for Barron, and the 13th spacewalk at the ISS of the year.