System, to be built from a range of assets from multiple countries, will involve everything from short-range, low altitude systems to medium, long and high-altitude systems.
National POW/MIA Recognition Day events take place across the nation, including a large Florida American Legion Riders observance and National Commander Troiola speaking in Montana.
Army Secretary Christine Wormuth said she promises big boosts in barracks spending in the coming years, saying she fears soldiers across the service are living in substandard quarters.