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In this first episode of a two-part story, the 4077th's resourceful company clerk Radar O'Reilly (Gary Burghoff) is on a well-deserved leave in Tokyo. Colonel Potter (Harry Morgan) for one cannot wait until Radar returns; thanks to the combined ineptitude of Klinger (Jamie Farr) and Zale (Johnny Haymer), the camp's generator is on the blink, leaving the doctors and nurses without electricity. Only Radar has the smarts to requistion a new generator in a hurry--but fate has other things in store for the mild-mannered corporal.