"Turn The Chessboard Around"
You are not admitting that aliens are visiting the Earth, you are yourself trying to understand from their perspective assuming they are there. It helps a lot.
Also, our own sci-fi entertainment like Star Trek and Star Wars have most people thinking in terms of us being "just a few hundred years behind them". 10,000,000 years is almost a "wink of an eye" to the galaxy. What it they are 10,000,000 years ahead of us... not just a few hundred. If they were, and we got our hands on their stuff... how long do you think we could keep it? No matter where we put it. If Greneda got their hands on B2 Spirit stealth bomber, how long do you think that they could keep it? The presumed aliens wouldn't want us to have it, right?
The "Tic-Tacs" in the Nimitz incident... with the chessboard turned around, do they appear to be the type of craft that are manned or unmanned? That should be an easy one.
If these aliens are this advanced, and don't want us to have their stuff... the HUGE gaping hole in the Roswell story everyone misses... Why would they leave a "crashed ship" lying in Mac Brazel's field for three days?
The Teflon Believer