SECRET SPACE PROGRAM

The Secret Space Program refers to what may be the fantastic and futuristic existence of an advanced program concerning space research and development financed by a Black Budget program.
Science fiction novels and movies often exhibit truly remarkable space craft and very futuristic capabilities concerning mankind's venture into whatever might be "out there".   However, is it possible that a Black Market financed space program has already paved the way for the existence of those fantastic advances in space travel and exploration?  And if such advances have been made, could they be not solely man-made, but also alien-made?
Most of us are familiar with Edward Snowden, who provided information to the Washington Post concerning the Black Budget.  Many consider him a hero for revealing some of the covert operations of the United States government, and probably an equal number consider him a traitor for talking and writing about what information he acquired through his high security clearanc