The Normandy dropped into Earth's atmosphere before activating its thrusters and flying towards New York at a speed that would leave any jet behind. Joker worked on a holographic interface, lining up the Normandy with the exact coordinates Shepard had given him.
"Here we go. Garrus, hit 'em with the Thanix cannon!" At several miles up, the main gun extended it barrel, and fired a stream of superheated lead at the target with almost the same muzzle velocity as the gun on a Everest class dreadnought. The Normandy levelled out and waited for feedback.
"Shepard, did we get them?"
JaguarDwarf said:
A chaos marine spotted the tank and began to crawl over it. He entered through the barrel and killed the 2 engineers so silently you could hear nothing. Satisfied he went off to kill the rest of the tanks.
OOC: You know the barrel diameter on an M1 Abrams main gun is only 105mm in diameter, right?