Taking 'FAA controllers at Boston Center, which had tracked the first two hijackings, requested at 9:07 that Herndon Command Center get messages to airborne aircraft to increase security for the cockpit.' as a given, does it logically imply 'FAA controllers told planes there was no reason to worry.'
FAA controllers at Boston Center, which had tracked the first two hijackings, requested at 9:07 that Herndon Command Center get messages to airborne aircraft to increase security for the cockpit.###FAA controllers told planes there was no reason to worry.