After a slight delay to track down a small pressure leak across the hatch between the Zvezda module and the Zarya module modules, Commander Valery Korzun and Flight Engineer Sergei Treschev opened the hatch to the Pirs Docking Compartment at 0527 hours Greenwich Mean Time, to commence the second spacewalk conducted by Expedition Five crew members. The International Space Station was flying over Russia at an altitude of two hundred and thirty-five statute miles.

        Commander Korzun and Flight Engineer Treschev had a variety of tasks to complete during their five hour and twenty-one minute duration spacewalk. Those tasks included attaching hardware to the exterior of the Zarya module that will be used for improving route tethers and temporary stowage for equipment during future spacewalks; replacing Japanese materials experiment panels on the Zvezda module, which measure the effects of atomic oxygen in low Earth orbit and collect small pieces of space debris; attaching new plates for the Russian Kromka experiment, which are used to collect and study the residue emitted by Zvezda's jet thrusters; and installing two additional amateur radio antennas on the Zvezda module to improve contacts with ham radio operators on Earth. The two spacewalkers also photographed each of these activities for engineers on the ground.

        While Commander Korzun and Flight Engineer Treschev worked outside, Flight Engineer Peggy Whitson tended to space station systems and assisted the spacewalkers as necessary from inside the Zvezda module. She also manoeuvred the Canadarm2 robot arm to provide camera views of the cosmonauts for the two mission control centres.

        Flight Engineer Whitson completed the first spacewalk of her career on 16 August 2002 with Commander Korzun, spending four hours and twenty-five minutes outside the orbiting laboratory, installing six micrometeoroid shields on the Zvezda module.

        The next series of spacewalks to be conducted at the International Space Station was planned for October 2002, when two astronauts, Dave Wolf and Piers Sellers, conduct three excursions during the STS-112 shuttle mission, to help install and activate the Starboard One Truss, further expanding the space station's framework structure.