A Tennessee congressman investigating UFOs claims the crafts appear to 'defy physics as we know it.'
Republican Tim Burchett believes there is no question the objects in the skies are not of this Earth and have abilities to fly underwater and never leave behind heat trails.
Burchett - who is on the House Oversight Committee overseeing UFO hearings - has been shown classified footage not yet released to the public.
The congressman told the Event Horizon podcast this week that 'we've been dealing [with government coverups] since 1947, probably since about 1897 in what was the Aurora Texas 'UFO crash.'
'They [extraterrestrial craft] can travel light years or at the speeds that we've seen defy physics as we know it,' Burchett said during the podcast.
'They can fly underwater and don't show a heat trail.'
He continued to explain that if these otherworldly beings have technology unlike anything we know on Earth, then 'they' could 'turn us into a charcoal briquette.'
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