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Another person has reportedly been spotted flying a jetpack over airspace close to Los Angeles International Airport, giving the FBI another headache, because they haven't worked out who it was the last time it happened.
The incident was reported by a China Airlines crew on Wednesday afternoon.
The crew say that they encountered a jetpack-clad man flying at 6,500 feet about seven miles to the north of LAX, according to CBS Los Angeles, who cited a Federal Aviation Administration spokesperson.
6,500 feet is a long way up, particularly if you've just got a jetpack strapped to your back.
Is this Elon Musk? In this wretched and unpredictable year, anything is possible.
For real though, the FAA and FBI are taking this matter very seriously because they believe that the person or people that are flying jetpacks around California to have 'threaten[ed] US airspace'.
The FAA has notified the local law enforcement agency, as well as the bureau, and they're appealing for witnesses or anyone with information to come forward.
A statement from the FBI reads: "The FBI is in contact with the FAA and is investigating multiple reports of what, according to witnesses, appeared to be an individual in a jetpack near LAX, including one today reported by a China Airlines crew. Anyone with information should contact the FBI at 310 477-6565."
So, if you're in the Greater Los Angeles area and you've noticed that your neighbour has a very loud garage and buys a lot of jet propellant fuel, you know who to contact.
As we've already touched upon, it's not clear whether the 'jetpack man' involved in this alleged incident is the same as the one who was involved in an incident back in August.
Imagine that, two blokes on jetpacks duking it out in the skies above LA. The stuff that Michael Bay films are made of.
In the first case, the bizarre sighting was reported by an American Airlines pilot who radioed back to the control tower saying: "Tower, American 1997, we just passed a guy in a jetpack."
The tower responded: "American 1997, OK, thank you. Were they off to your left or right side?"
He confirmed: "Off the left side, maybe 300 yards or so, about our altitude."
The tower hit back: "Only in LA."
At least they're fairly calm about it.
To be fair, there's only going to be one winner between a man on a jetpack and a large commercial jet.
However, some experts have suggested that it could be unlikely that this person is flying a jetpack.
David Mayman, the CEO of Jetpack Aviation, explained: "How is it that nobody saw them take off and land? That's what I don't understand.
"These machines are pretty noisy."
He added: "We would never fly very high without a parachute system," he said, adding "At 6,000 feet it would just take us too long. We'd run out of fuel."
Let's not rule it out just yet, though.
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