Long before Tony Stark took a load of shrapnel to the chest in a distant war zone, science fiction legend Robert Heinlein gave America the most visceral description of powered armor for the warfighter of the future. Forget the spines of extra-lethal weaponry, the heads-up display, and even the augmented strength of an Iron Man suit — the real genius, Heinlein wrote in Starship Troopers, "is that you don't have to control the suit; you just wear it, like your clothes, like skin."

"Any sort of ship you have to learn to pilot; it takes a long time, a new full set of reflexes, a different and artificial way of thinking," explains Johnny Rico. "Spaceships are for acrobats who are also mathematicians. But a suit, you just wear."

First introduced in 2013, U.S. Special Operations Command's Tactical Assault Light Operator Suit (TALOS) purported to offer this capability as America's first stab at militarized powered armor. And while SOCOM initially promised a veritable Iron Man-style tactical armor by 2018, a Navy spokesman told Task & Purpose the much-hyped exoskeleton will likely never get off the launch pad.

"The prototype itself is not currently suitable for operation in a close combat environment," SOCOM spokesman Navy Lt. Phillip Chitty told Task & Purpose, adding that JATF-TALOS has no plans for an external demonstration this year. "There is still no intent to field the TALOS Mk 5 combat suit prototype."