Mail Call· Season 2 · Episode 1
Grenade Launchers; Grape Shot; Shrapnel; D-Day Paratrooper Gear; Jet Packs
Learn how grenade launchers work; how a .30 caliber machine gun compares to a .50 cal; watch Ermey behind the wheel of a Flyer 21; and discover the origin of the word shrapnel.
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