From Google AI
Yes, technically you can legally own a Harrier jump jet as a civilian, but it is extremely difficult to do so and requires extensive approvals due to its military origin, complex maintenance needs, and the need for a highly qualified pilot to fly it; the only known privately owned and flown Harrier belongs to a former military test pilot, Art Nalls, who has a specially modified Sea Harrie
Here is what I slapped together way back when of what Harrier stuff I saw at that show.
It’s short.
https://www.youtube.com/watch?v=WuuIfvyYC-w