Expedition 25 crew members take a break at NASA's Johnson Space Center to pose for a crew portrait.

Expedition 25 crew members take a break from training at NASA's Johnson Space Center to pose for a crew portrait. Pictured at center right is NASA astronaut Doug Wheelock, commander. Also pictured (from the left) are Russian cosmonauts Oleg Skripochka and Alexander Kaleri; NASA astronauts Scott Kelly and Shannon Walker; along with Russian cosmonaut Fyodor Yurchikhin, all flight engineers.