Repair work on space shuttle Atlantis will begin next week and it could fly as early as September 28. The cracks that were found in the metal liners inside liquid hydrogen pipes will be welded by a team that was “hand picked during a ‘Superbowl of welders’ for the critical job that requires the steady hands of a surgeon.” Imagine having that on your welding resume. Endeavour is up next for similar repairs, but Columbia, the oldest shuttle, has a different type of metal in the cracked parts, so NASA is doing further investigation.