After initial reports that Falcon Heene was trapped inside a homemade aircraft flying near Fort Collins, Colorado, the six-year-old is now missing.
The Heene family -- which appeared in the 100th episode of ABC's Wife Swap -- was constructing an experimental 20-foot helium balloon attached to their home earlier today, and it was initially believed that young Falcon boarded the "flying saucer," which is capable of ascending to about 10,000 feet.
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After accidentally taking off, the aircraft landed about 40 miles from where it took off two hours later.
The Heene family -- which includes two other young boys -- is described on Wife Swap's website as "storm-chasing" and "science-obsessed" and has constructed earlier "experimental aircrafts."
"When the Heene family aren't chasing storms," the site continues, "they devote their time to scientific experiments that include looking for extraterrestrials and building a research-gathering flying saucer to send into the eye of the storm."
A rep for ABC tells Usmagazine.com, "We are not issuing a statement, but we can confirm that the boy believed to be involved in the flight is Falcon and the family did appear on Wife Swap."
Late this afternoon, police were conducting a ground search for Falcon.