In this action-packed opener, Mack gives us an exclusive look inside the secret device that uses water power to tear apart terrorist bombs. Next he travels to New Mexico to try out a new squad weapon that might just be your best friend in an ambush. In Sweden, Mack pays a visit to a military test range to get an up-close look at the latest surface-to-air missile. And finally Mack goes back to his roots in Florida to size up the US Army's newest sniper rifle.