Recent accidents and incidents have resulted in new flight crew training programs, which in turn have raised interest in AoA in commercial aviation. Awareness of AOA is vitally important as the airplane nears stall."[105] Chesley Sullenberger said AoA indicators might have helped in these two crashes. "It is ironic that most modern aircraft measure (angle of attack) and that information is often used in many aircraft systems, but it is not displayed to pilots.