I don't see what the government have to hide unless they steal UFO technology to use as military weapons, but if that's the case why haven't these weapons been used in any wars?So the answer is no I don't believe in UFO's based on what I have experienced.
At this point it still does not matter for the people of this world are still not ready for a full-disclosure... For there would be a panicking of people that no single or multi-government situation could ever hope to control... This world of ours would explode with un-control able violence.... When the population of this world finish panicking, there would be nothing left for the aliens to attack...... If that is their purpose for coming here...
There sure are some strange things going to happen in the next 4 years. Several patents have been filed that soon got a "restricted" sticker on them - mostly regarding gravitics - spinning discs etc. This is not extra terrestrial. This is all USA based.NASA is working on smaler and smaler units.
Richard Nixon was forced to resign because the government couldn't cover up a third rate burglary at the Watergate Hotel so I find it hard to believe they've been able to cover up the existence of life on other planets.