Thompson parachuted, with a Navy SEAL at her back, from 10,000 feet onto the first tee of the LPGA Tour's Kingsmill Championship pro-am.
Thompson made a move in the other direction on Thursday, climbing to the top of the leader board with a 6-under-par round of 65, taking a one-stroke lead over Gerina Piller, Brittany Lincicome and Angel Yin.
Thompson teed off the 10th hole and made the turn at even par before a birdie at the par-four first kick-started a stunning final nine of 30 that included five birdies in a row from the third.
LPGA TOURKINGSMILL CHAMPIONSHIPSite: Williamsburg, Va. Course: River Course at Kingsmill Resort.
The Kingsmill Championship features 20 of the top 25 players in the world ranking, including the top six - Lydia Ko, So Yeon Ryu, Ariya Jutanugarn, In Gee Chun, Shanshan Feng and Thompson.
"Lexi did incredible! She was like a seasoned pro ... cool as cucumber", Red Bull Air Force's Sean MacCormac said of her skydive.
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About 100 firefighters saluted the ambulance that carried Deem to the Bexar County Medical Examiner's office early Friday morning. The other two firefighters were transported to a local hospital, but their conditions were not released.
The dramatic entrance highlighted Thompson's new initiative, a partnership with a Navy SEAL charitable foundation called the "Lexi Legacy Challenge". "I don t think I was hitting the ball fantastic, so there is a little bit of improvement to do there". "Words can't describe the feeling".
Piller, who was in the same group with Thompson, had six birdies and a bogey. "This week I need to work on creating enough birdie chances by hitting a lot of greens and the key would be to hit good approaches". "And the more I get into tournament mode, I feel that will help me get back into a good rhythm", Aditi said.
"It was an unbelievable experience", Thompson said. "Just happy to be under par and looking forward to tomorrow".
Piller has two fourth-place finishes this year and is regarded as one of the best on the tour who hasn't won a championship in her career.
Lincicome's five-birdie, no-bogey 66 was her best round since mid-March. "If you get above the hole you got to be really careful".