In his groundbreaking novel "I, Robot," Isaac Asimov proproses three laws of robotics, the first one of which reads: "A robot may not injure a human being, or, through inaction, allow a human being to come to harm." These laws are still bandied about by artificial intelligence researchers as a good starting point for an ethical foundation for guiding the design of robots that may some day think for themselves (see http://www.asimovlaws.com/ for a review). The idea is that technological advances are occurring so quickly that a moral groundwork needs to be laid before man destroys himself with his own technology. Apparently, the US military and the companies that design these killing machines for them don't see things the same way.