 These were to operate 50 kW at 167, 179 and 191 kHz with 700-foot towers.Besides the Maryland site, candidate sites for distribution stations were Maynard, Massachusetts; Mount Joy, Pennsylvania; Gray, Maine; Morristown, Tennessee; Starke, Florida or Chiefland, Florida; Mazomanie, Wisconsin; Carthage, Texas, Marshall, Texas or Seagoville, Texas; Alcova, Wyoming or Riverton, Wyoming; Mendota, California or Selma, California; Winslow, Arizona; Hermiston, Oregon; and Wallula, Washington.The network was designed to be connected to the Safeguard Radar network, which would predict where missiles and bombers would attack and broadcast a warning that would tell the listener which areas to avoid.