Originally Posted by cherokeesam
As explained in a recent prequel comic, that's supposed to be official, Tony had sent Rhodey out to investigate an attack by the Ten Rings terrorists in Hong Kong. While he was there, War Machine also ran into a hi-tech Hammer-issue robo-tank belonging to the US military that had been stolen by Ten Rings.
Thanks! Just hope they mention something in the movie in that effect for most of the GA who will be clueless like I was.