Capt. Chesley "Sully" Sullenberger is opening up about his Alzheimer's disease diagnosis, speaking with "Good Morning America" co-anchor Robin Roberts about his early symptoms, treatment and decision to talk publicly about his diagnosis. ↧ Capt. Chesley 'Sully' Sullenberger shares new details of Alzheimer'... The "Miracle on the Hudson" pilot shares how he and his family are navigating his diagnosis.