Given 'The controller checked his radio equipment and contacted another controller at 8:53, saying that we may have a hijack and that he could not find the aircraft.', is 'The controller contacted another controller to announce that everything was fine.' its antithesis?
The controller checked his radio equipment and contacted another controller at 8:53, saying that we may have a hijack and that he could not find the aircraft.###The controller contacted another controller to announce that everything was fine.