Yet again. If you proposing such a theory, you should offer a reason too. WHY would the government cover this up???? And again it is impossible to cover this up. Nowadays you don't need to be a journalist to report. Youtube and twitter means that news gets out. So people living near the Kents and the people of Smallville would definitely report one way or another. There is no way this stays hidden. This would be like hiding 9/11 or Tiananmen Square. The U.S. isn't China to try to cover up an entire alien invasion for no rational reason of any kind.