i was on you tube looking at planes landing with a view from the cockpit video called (landing at dakar airport with a surprise).At approx 55 to 58 seconds just as the plane is landing i saw an object come from right to left of the screen. I rewound to 56 seconds of the video and stopped it at 58 seconds right over the airplane that had crashed on the ground. between 55 to 58 seconds it was there disc shaped craft with a dome top.I rewound it again a dozen times to make sure and bang there it was amazing !!!! Please look for yourselves from john cain in england