drones. the pentagon has made mistakes using drones including in august when the u.s. military fired on what it thought was an isis target, but killed ten civilians including seven children. analysts saw a child in the target area but the missile had been launched. the afghan ceo says their weapon can cancel an attack two seconds before impact. >> make decisions while flying the missile in the air as to what to do during your mission. >> reporter: the development of smaller, cheaper drones, already used on the battlefield, pose new dangers for the u.s. too. paul shar, a retired ranger, says weapons like these change the games. >> levels the playing field between the u.s. and terrorist groups or rebel groups where it's not good for the united states. >> reporter: iranian backed militias have attacked american bases in iraq and target the iraqi prime minister. >> the u.s. is vulnerable to a drone attack today. we need better defenses and we