NATIONAL HARBOR, MD -- The Air Force believes it has the "easiest path" among the U.S. military to fielding a long-range, maneuvering hypersonic weapon and plans to arm the B-52 bomber with such a conventionally armed weapon as soon as 2020, according to service officials. Air Force leaders revealed new details about the Hypersonic Conventional Strike Weapon (HCSW) -- one of two rapid prototyping hypersonic projects -- during the Air Force Association's annual conference here, making explicit which aircraft the...