OTD…June 3, 1965 and the first American walk in space

After a bit of a struggle with a balky bolt, space station commander Peggy Whitson replaced a failed external computer during a short, hurriedly planned spacewalk Tuesday while crewmate Jack Fischer installed a pair of antennas to improve wireless communications during future excursions.

#OTD in 2009…Discovery launches on her silver anniversary mission

Astronauts Reid Wiseman and Barry “Butch” Wilmore floated outside the International Space Station and, after a bit of trouble with a balky bolt, replaced a broken voltage regulator in one of eight solar power channels to restore the lab’s electrical grid to normal operation.