The UFO threat to the world is not about the ships it's about Time Travel (from our government's perspective)

 In other words the primary reason that the Pentagon and other military government agencies do not want UFO information out there is because we have been using UFO time travel devices since at the very least the early 1950s in order to prevent retroactively nuclear blasts all over the earth.

This information would change the world in such a profound way that the only way people the military can find to hide this information is by preventing more knowledge of UFO stuff getting out.

This is the primary problem the military has with people finding out more about UFOs.

This is what is really going on.

The knowledge for SURE of time travel being used by world Governments is why all this is such a problem.

Admitting that time travel has been used in order to keep earth intact since the 1950s is something no one in the military wants this information to come out for many many reasons.

However, now we are in a situation where global warming might render humans extinct.

So, the potential for extinction is changing the way all this is being dealt with.

Where this is going to go next is anyone's guess.