It has become much harder to protect the world's biggest superpower and the same is true for all western and other governments. technical breakthroughs put tools of warfare and power into terrorists hands as we know all to well
DOD plans to introduce agile and sustainable innovation vital as are the goals of the Strategic Defense & Security Review in UK
THE “DOOMSDAY PLANE” weighs 800,000 pounds when fully loaded and can withstand the effects of a nuclear bomb or asteroid blast while remaining aloft for 12 hours without refueling. First deployed in 1974, the Boeing E-4B has been the preferred mode of long-range transportation for US secretaries of defense ever since. But when Ashton Carter’s staff discovered the behemoth would literally crush the runway in Sun Valley, Idaho, where he planned to attend the annual gathering of tech elite at the Allen & Co. conference, the SecDef nimbly switched to a sleek Gulfstream V.
http://www.wired.com/2015/11/secretary-of-defense-ashton-carter/