NASA astronaut Clayton Anderson, an Expedition 15 flight engineer, gives an 'OK' sign to onboard cameras after Mission Control lauded his crew's bright yellow hard hats during the Aug. 20, 2007 relocation of the PMA-3 docking port outside the International Space Station. Expedition 15 commander Fyodor Yurchikhin (left) waves while flight engineer Oleg Kotov floats in the background. Credit: NASA TV.
