To describe in detail just how all this was accomplished would fill a book in itself, but it may be grouped under the following heading and then each group described in general terms. LIGHTING, VENTILATION AND INTERIOR COMMUNICATION The first problem was light. To solve this so as to be able to have battleship control, it was necessary to locate every light on its proper circuit. There are about fifteen thousand lights, controlled from eighty-one lighting or power stations and each station containing from eighty, the highest, to ten the lowest, local branch circuits, which in turn are supplied from seventy-six main circuit switches and these again from eight main switchboard feeder switches. When this lighting is distributed over fourteen decks, of which the main deck, at sea level, has an area of seventy-six thousand square feet, one may grasp the magnitude of the problem attempted by these men. This had to be completed without any wiring plans and without interfering with the ship’s repair work of other departments. To crown it all, along came the wreckers. That is, the construction gang who stripped four decks of all room paneling. If it had not been for the alertness and co-operation of the electrical force, both civilian and enlisted, serious fires would have surely resulted. As it was, not a fire alarm was turned in during the entire reconstruction period, due to nothing else except the alertness of these loyal men. TRACING THE LIGHTING CIRCUIT During the day the electricians would search out lighting stations, turn off lighting switches, test out circuits and do all minor repair work. At night after the main working force had knocked off, the electricians would muster in primary station number two, main lighting distribution station. Then a main distribution switch of either general lighting, police gangway, or police cabin lighting would be cut off. Emergency lighting was never cut out. The men would then leave in squads and make note of what lighting was cut out and what remained in; and in that manner the lighting control was traced down to such a degree of safety that at dusk all lights that might be visible to the enemy and at the same time provide sufficient lighting for reasonable comfort for the crew and troops could be controlled from one central lighting station and cut out in less than a minute’s time. The proof of how successfully this was accomplished, is in the fact that during the entire period of the war, only one light was reported visible by the escort and that was due to the carelessness of a young officer who left a port open against orders.