Are UFOs real?

 Some of them are.

Like the ones Eisenhower bought to control time to undo any nuclear explosions retroactively by changing time. 

The real reason the government keeps UFOs secret is because the saucers you hear about alter both time and space when they travel otherwise you wouldn't see them doing 4000 to 7000 mph sudden right angle turns. This would be the only way something inside those saucers could actually survive of 4000mph to 7000 mph right angle turn while traveling through our atmosphere.

So, Eisenhower bought at least 2 of these things in the early 1950s to retroactively change the time line whenever a terrorist or nation nuked out of existence a city, or nation or the earth itself. All of these things have already happened since world war II by the way.

So, when it comes to presidents, maybe Eisenhower has been the most important president since World War II simply because the earth wouldn't presently even exist without his purchase of the time space traveling flying saucers he purchased from UFOs.