Sully (film) January 15, 2009, US Airways pilots Captain Chesley "Sully" Sullenberger and First Officer Jeff Skiles board US Airways Flight 1549 from LaGuardia Airport to Charlotte Douglas International Airport. Three minutes into the flight, at an approximate altitude of 2,800 feet (approx. 850 m), the Airbus A320 strikes a flock of birds, disabling both engines. Without engine power and judging themselves unable to reach nearby airports (Teterboro Airport being the closest), Sully ditches the aircraft on the Hudson River. The crew and passengers evacuate without casualty. The press and public hail Sullenburger a hero, but the incident leaves him haunted, and
Flock (birds) success rate when attacking the flock, rather than increasing the ability of the flock to spot an approaching predator. By birds co-existing with one another in a flock, less time and energy is spent searching for predators. This mutual protection of one another within the flock is one of the benefits to living within a group. However, as flock numbers increase the more aggressive individuals within the flock become towards one another. This is one of the costs to living within a flock. It is often seen that flocks are dynamic and thus fluctuate in size depending on the needs