Navy 's laser tested off coast in Persian Gulf from September to November . Weapon fired by Navy using video game - like controller . The Navy says the laser weapon is safer than conventional arms that use propellants and explosive warheads , and more cost-effective . ` Laser costs less than $ 1 a ##piece .
Navy 's laser tested off coast in Persian Gulf from September to November . Weapon fired by Navy using video game - like controller . Laser costs less than $ 1 a ##piece .