ISS034-E-010478 (24 Dec. 2012) --- Expedition 34 crew members assemble in the Unity node of the International Space Station for a brief celebration of the Christmas holiday. Pictured clockwise (from top right) are NASA astronaut Kevin Ford, commander; Canadian Space Agency astronaut Chris Hadfield, Russian cosmonauts Evgeny Tarelkin and Roman Romanenko, NASA astronaut Tom Marshburn and Russian cosmonaut Oleg Novitskiy, all flight engineers.