NASA A Day's Work: Robert Behnken Updates Power Systems on the Station

On June 26, 2020, NASA astronauts Bob Behnken and Chris Cassidy conducted the first of two spacewalks to swap batteries and upgrade power systems on the International Space Station. via NASA http://www.nasa.gov/image-feature/a-days-work-robert-behnken-updates-power-systems-on-the-station