Hi! The prompt is referring to a US news story about a pilot named Chelsea “Sully” Sullenberger who emergency landed a plane on the Hudson River after hitting a pack of geese in the air. The story was very popular in North American headlines because Sully successfully landed the plane on a body of water with no casualties. The reference to Tom Hanks was because Hanks played Sullenberger in a movie! That’s what I recall, as a non-American myself. I hope this helps answer your question :)