Hoping to end a string of delays, NASA will try to launch the space shuttle Endeavour on Sunday on a mission to deliver the last piece of Japan's Kibo laboratory to the International Space Station. Launch is scheduled for 7:13 p.m. EDT (2313 GMT) from the Kennedy Space Center in Florida. NASA canceled Saturday's launch attempt after a spate of lightning strikes near the shuttle's launch pad. Engineers spent the day checking the spaceship's electrical systems and other equipment to make sure there was no damage. "We've seen nothing so far that indicates anything was actually affected by the lightning strikes," Mike Moses, the shuttle program manager at the Kennedy Space Center, told reporters after Saturday's postponement. "I fully expect this to be a positive story, but we have a lot of equipment that has to be checked and that's what takes time," he was quoted as saying by Reuters.