In 2015, a video showing a semi-automatic handgun being fired from a custom-built drone went viral, raising concerns for authorities, including the FAA. The development of such a DIY device was only a matter of time, as was the commercialization of the technology. Now Florida-based startup Duke Robotics has unveiled the TIKAD, a custom-built multirotor that can carry and fire various military weapons, including semi-automatic rifles and grenade launchers.