
Police arrested a California man, Jack Matthew Propeck, after federal authorities charged him with illegally BASE jumping off a cliff in Yosemite National Park. He claimed he fabricated the stunt using artificial intelligence.
Propeck, a resident of Mission Viejo, California, now faces federal charges stemming from a video he posted to Instagram in October 2025. According to prosecutors, the video shows a parachute-assisted leap off Glacier Point, one of Yosemite’s most iconic overlooks. Propeck shares other daredevil feats on his feed.