In the Unity node onboard the International Space Station, this snack time snap shot taken on 21 May catches three Endeavour astronauts during a break in a very busy schedule. From left in foreground are NASA astronaut Mark Kelly, STS-134 commander; ESA's Roberto Vittori, STS-134 mission specialist, and NASA astronaut Greg Chamitoff, mission specialist. NASA astronaut Cady Coleman, Expedition 27 flight engineer, can be seen in the background.