Do humans have the right stuff to fight aliens?

While we’re being entertained by blockbusters that feature fictional battles with imagined aliens, Foreign Policy takes a look at some very real efforts to develop weapons that could make it a fair fight. From a laser beam designed to “harness the speed and power of light to counter multiple threats,” to high-tech jets that can fly at speeds up to Mach-20, the preparations for the future of war are well underway. We just need to stun the aliens long enough for our bath-salted zombie cannibals to get their hands on them.