The Albuquerque Bernalillo County Water Utility Authority on Monday demanded that the U.S. Air Force take immediate steps to clean up a jet fuel spill on Kirtland Air Force Base that threatens the city's underground drinking water supply, and it put the Air Force on notice that it will not allow jet fuel to enter the water supply. "The Water Authority's Position [is] that ethylene dibromide at any detectable level will not be allowed to enter the potable drinking water system," said a resolution…