" But Vader cautioned about the Death Star""s potential "technological terror" -- "The ability to destroy a planet is insignificant next to the power of the Force.Azog further commanded a strategic move against the city of Dale, using Great War Trolls (led by an Ogre) with catapult mechanisms on their backs: "Send in the war beasts.At lunchtime, he visits Mulwray""s "Water and Power" office, but the engineer is not in.Lying to pretend that he has an appointment (he tells Mulwray""s secretary (Fritzi Burr) that "it""s a personal matter"), he snoops around the office (he sees a framed picture of Evelyn next to a stallion on the desk) and opens up Mulwray""s desk drawers.As they spoke together, Bilbo noticed a vulnerable bare spot on Smaug""s upper chest where Bard""s ancestor Girion centuries earlier had fired a Black Arrow and dislodged an armored-scale.