Endeavour A-OK

NASA engineers have cleared space shuttle Endeavour to return to Earth. Inspection of the orbiter found seven dings in the heat shield tiles. Six of those were quickly cleared, but the seventh posed more of a concern. Astronauts used the remote manipulator arm to position a camera and sensors to study the area more closely. Engineers built a 3-D model of the ding and decided it poses no danger.

Endeavour is scheduled to land June 1.