John Abend : Pilots prepare for emergencies . 9/11 added terror , MH17 added missile evasion . Some other plane could have avoided missiles , but he says crew followed air traffic control . He says pilots ' n't just change course , they follow regulations . Plane already at higher altitude . Abend : Airplanes not able to avoid missiles . Such technology would be quickly obsolete .
Les Abend : Pilots prepare for emergencies . 9/11 added terror , MH17 added missile evasion . Some say plane could have avoided region , but he says crew followed air traffic control . He says pilots ca n't just change route , they follow regulations . Plane already at higher altitude . Abend : Airplanes not able to dodge missiles . Such technology would be quickly obsolete .