11.   Had backup engine controllers not taken over after the electrical short, Collins and pilot Jeff Ashby would have been forced to attempt an unprecedented emergency landing.

12.   However, in early March the arm experienced what experts believe was an electrical short in its wrist joint assembly.

13.   However, all missions were halted when the July launching of the shuttle Columbia experienced an electrical short moments after lift off.

14.   In addition to the electrical short, Columbia also experienced a small leak of explosive hydrogen during its climb to orbit.

15.   In late July, the shuttle Columbia experienced an electrical short moments after lift off, jeopardizing the mission.

16.   In early March, the device experienced what ground-based experts believe was an electrical short in the wrist assembly, which momentarily immobilized the entire limb.

17.   Inspections and subsequent repairs were ordered after the shuttle Columbia suffered an electrical short that knocked out two engine computers during its launching in July.

18.   Investigators initially termed the fire accidental, speculating it might have been caused by an electrical short.

19.   Investigators determined that an electrical short in an unvented dryer in the living room caused the blaze, igniting clothing around the appliance.

20.   It turned out, she said, that it was an electrical short that was arcing, and when it arcs, it makes a distinct, loud snap.