Laser guns!

A Laser weapon waiting to be loaded on to a ship
Photo: U S Navy

  The United States Navy has been looking for a way to protect ships, expensive ships, against much less expensive anti-ship missiles.  They have found an answer - the laser.
  Successfully tested a number of times at land bases and about ship the weapon is now on active duty.  One has been installed on the USS Ponce and is on patrol in the Persian Gulf.
  Read more:  http://www.msn.com/en-us/news/us/us-navy-laser-weapon-performing-beyond-expectations-official/ar-BBgCZxF
  Here are the results of one test.  A remotely controlled airplane is shot down by a laser:

Photo: U S Navy