Astronauts Go Spacewalking to Give New Hand to Robot Arm

Vande Hei performed a similar spacewalk last October, when he replaced the first of two original hands on the Canadian-built arm. This second hand will go on the opposite end of the 58-foot arm. The bulky bundle of latches needs to be replaced because of wear and tear. It's been in orbit, grabbing cargo capsules and performing other chores, since 2001.