What would you do if you, being on the ground, saw an unidentified flying object?

Here is what I would attempt to do if I was on the ground and saw an unidentified flying object a thousand feet above me :-
1) Find another person nearby to witness it.
2) Make sure that someone takes 'stills' photographs or uses a video camera.
3) Contact the nearest airport for radar tracking.
4) Contact the nearest RAF base for radar tracking and maybe to 'scramble' aircraft to
investigate.
5) Afterwards contact The Galileo Project and encourage others to volunteer to share their
photos / videos / testimony etc with the project.

You are wasting your time 6eq, there will always be believable deniability. Look at your attitude towards me. Unless aliens fly a craft above the houses of parliament, then land with aliens coming out, then provable existence will never exist.

Even if that happened the government will say its the yankees.

Believe or not, that is the choice.