When Harry's Team is shown the freedom and independence, Truman comments on its advanced technology and its "Titanium Alloy Impenetrable Skin." And yet when A.J.'s team crashes on the asteroid, they are easily able to destroy the shuttle wall in order to get out. Either this metal is paper thin and would burn up when it entered the atmosphere, or NASA has very powerful machine guns. (This doesn't even question the fact that NASA equipped their drilling machine with a heavy duty combat machine gun)