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Show Antiaircraft Ligjht Trap Is Shown Crowd A SEARCHLIGHT projecting a J holt of light forty-four miles into the air, brought to Salt Lake with the transcontinental motor train, -was operated last night at Second South and Main streets, aud for several hours played on the tops of skyscrapers and into tho heavens. The light is used in war to swoep the sky in search of enemy airplanes, j According to Master Engineer H. C. Delmars, of the engineering depart- ! ment, accompanying the convoy, two lights are generally used when an enemy machine is sighted. Situated j some distance apart tho searchlights i form a conjunction of force on the I enemy aviator, blinding and confusing confus-ing him. This trick of playing pow- j erful lights on the birdman haa often ; brought him down when aircraft guns failed, declared Mr. Delmars. ' The light was operated for the amusement of the crowd by Corporal McPherson of the engineering department, de-partment, j |