Is there a neutral relationship between 'The threat of terrorists hijacking commercial airliners within the United States-and using them as guided missiles-was not recognized by NORAD before 9/11.' and 'NORAD recognized the danger of hijacked airplanes as weapons long before 9/11.', lacking direct logical ties?
The threat of terrorists hijacking commercial airliners within the United States-and using them as guided missiles-was not recognized by NORAD before 9/11.###NORAD recognized the danger of hijacked airplanes as weapons long before 9/11.