Force Ufo Fly

What really happened in Vietnam the other day?
The Vietnamese Air Force reported on May 28th that an unidentified flying object (UFO) exploded off the coast of Phu Quoc, and metallic remains were found but no survivors or bodies were located. There have also been no reports of missing or lost aircraft. Was it an alien spacecraft? Is this finally proof that Earth is being visited by extraterrestrials?
See the full article here:
http://news.yahoo.com/s/nm/vietnam_ufo_dc
"" . . . and perhaps it was a plane, but authorities could not identify whether it was a civil or military aircraft," VNA said in a report headlined "UFO explodes over Phu Quoc Island."
The strange thing about UFO buffs is that they seem to have such an incredibly low opinion of their aliens. The best evidence they put forward for aliens is that they keep failing to miss the planet.