First in a series of spacewalks to outfit Nauka. The cosmonauts will route cables which were recently temp stowed on PMA 1 along Zarya to the Zvezda transfer compartment where they will be mated to Nauka. The spacewalk will conclude with the installation of handrails and the first experiments on the new module. If time allows the cosmonauts will change Biorisk containers and will retrieve and replace two exposure experiments from Poisk and bring them inside.
