First off you cant just hijack a c-130 thats basically impossible. Second theres a reason why visitors are never put in the same bunker as the president. Third of all the army would arrive in less than two minutes, fighters would scramble, and a bomb cant even blow up the White House fence. Basically its impossible to take the White House or us soil. The White House is also equipped with military grade mini guns at every corner. Good luck invading American soil.