I can't really beat Gizmodo's post on this: "Scratch another one on the checklist for Humanity's ultimate self-destruction. A Warrior-Alpha drone from the US Army's Odin Task Force fired against enemy forces with no pilot." A drone is a robot; e.g. the plane not only has no pilot, it has nobody at all in it (hence no need for a window, as you can see). More on Gizmodo, although there seems to be a lot of debate there about whether this is really the first time a robot plane has fired a weapon in a real war.
