When it comes to UFOs, it depends on what you mean.  I do NOT believe there are little green men from planets many light years away visiting our planet, but there does seem to be unidentified stuff going on (some is hoaxes, but not all).  I tend to think (but am not dogmatic) that they are trans-dimensional beings that are otherwise known as demons.  The uptick on sightings and governments becoming open about it is setting up the world for the rapture.  

I never understood how the rapture of the church could happen and the world not turn instantly to God, but if "aliens" (aka demons) suddenly appeared in the sky announcing they had removed the unenlightened people so the world could progress, people would shrug and go on with their lives happy that they were the ones chosen by the higher beings.

Just a theory, but it matches with the evidence.