What to know about the military's interest in force fields | Popular Science

The best armor, if it could be devised, would weigh absolutely nothing. It would surround its wearer in an impenetrable aura of pure protection, holding all threats at bay. This idealized defensive system could come in the form of a force field, and it would be useful for stopping everything from nuclear missiles to small drones. With directed energy weapons, the Air Force believes such a force field is someday possible—but that day is in 2060 at best.