Pettit works on a SPHERES in the Portable Glovebox in the U.S. Laboratory

ISS030-E-051104 (27 Jan. 2012) --- NASA astronaut Don Pettit, Expedition 30 flight engineer, works on a Synchronized Position Hold, Engage, Reorient, Experimental Satellite (SPHERES) in a portable glovebox facility in the Destiny laboratory of the International Space Station.