Mail Call· Season 1 · Episode 3Flak Vest; Medieval Crossbow; WWI PilotsS01E03·August 18, 2002·30m·HistoryBody armor; accuracy of a medieval crossbow; how World War I pilots shot through their propellers.Streaming on (US) See allSharePreviousKnight's Armor; WWI Backpack; LandmineS01E02NextCivil War Cannoneers; Night Vision; Clearing a MinefieldS01E04Keep going
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