Air raid protection. Test "alarm." This and the accompanying photo (#1955) tell graphically what can be done when civilian defense officials, police and public all co-operate to make an "alarm" successful. These pictures were made on the morning of December 15, 1941, in Times Square, New York City. The time interval between photos was exactly five minutes. Within this time, in one of the most crowded metropolitan areas in the world, it was possible to stop all traffic, and to get all persons safely indoors. Those few remaining on the street are civilian defense officers (wardens, etc.)