Inside History on Instagram: "The cost for the U.S. Navy to fire its weapons varies widely. Small defensive guns like the Phalanx CIWS cost thousands of dollars for just a few seconds of fire, while advanced munitions can be extremely expensive—Zumwalt-class gun rounds reach nearly $1 million each, hypervelocity projectiles cost tens of thousands per shot, and cutting-edge hypersonic missiles can exceed $50 million per launch! #history #army #movies #science #usa"