Pat O'Brien (1890 - 1920)

Lieut. Pat Alva O'Brien (13 December 1890 - 17 December 1920) was an American World War I aviator. He flew for the RAF and crashed behind enemy lines in 1917, was captured, escaped the Germans by jumping out of a prison transfer train and walking 72 days through Belgium, clearing a 9 foot electronic fence into Holland.