41.   Typically, shuttle managers press ahead with launch plans even with bad weather odds.

42.   Well before sunrise, shuttle managers were to convene to review countdown preparations.

43.   When shuttle managers ordered inspections of Discovery as well as Endeavour and Atlantis, similar insulation nicks were found.

44.   When shuttle managers were unable to pin down the cause of the technical difficulty, they scrapped tentative plans to try again Tuesday.

45.   When the short was traced to wiring with damaged insulation, shuttle managers ordered inspections and repairs to each of the winged space shuttles.

46.   With the added work, shuttle managers pushed the liftoff to Tuesday and possibly later if there is difficulty with the replacement, said NASA spokesman Bruce Buckingham.

47.   With a short break coming between weather fronts, NASA shuttle managers are hoping to send the orbiters Atlantis and Columbia on their way to Florida this week.

48.   As a result, shuttle managers put off the launch until after the spacewalk.

49.   But shuttle managers put the flight on hold until repairs could be made to the nozzles of both solid-fuel rocket boosters.

50.   But the weather improved dramatically by evening, and shuttle managers gave the nod.