A basic screenwriting tip is to start your screenplay on a special day. Clint Eastwood’s latest film “Sully” certainly does that. “Sully” begins on January 15, 2009, the day a US Airways Flight 1549 was forced to make an emergency water landing on the Hudson River. The film is set during the subsequent inquiry held by the National Transportation Safety Board into the forced landing. Flashbacks are used heavily to depict important contextual events relevant to these hearings. The forced water landing along with important events in Captain ‘Sully’ Sullenberger’s flying career are primarily depicted through flashbacks and dream sequences. “Sully” begins with the miraculous water landing that took place…