Are UFOs just time travellers?

Lets say in the future time travel was invented. And you then chose to go back in time to see a UFO sighting, could it be possible that our time travelling craft was the UFO that was originally sighted? Due to a strange paradoxical event?

Could only one time traveller occupy one place at a time? Or could everyone travel to that place? It could explain why only one (in most cases) UFO gets spotted in a sighting.

It would be ironic that after all this time UFOs were just us as futuristic tourists.

What do you guys think?

No doubt goes against all those who feel visits are among the dozens of different folks who visit us from whatever.
What if the remains of occupants found in crashed craft so long ago had USAF on the shirt...and the massive cover-up starts. Feed the public about aliens...and away we go.

I have always aks myself about the same thing. I believe if time travel was possible and it was somehow control by the goverment,you will travel to the areas in times when really important things happened.

May be thats why there were a lot of sightnings back in the '50 and '60.