(written from a Production point of view)
Kenneth R. Lesco is a stuntman and stunt actor who performed on several episodes of Star Trek: The Next Generation, Star Trek: Deep Space Nine, and Star Trek: Voyager. He also served as an assistant stunt coordinator on some episodes of Deep Space Nine but received no credit for his appearances. A Starfleet uniform worn by him was sold off on the It's A Wrap! sale and auction on eBay. 
Lesco has been a stuntman and stunt coordinator for many popular movies, especially those directed by Quentin Tarantino. Among his credits are films such as Arizona Heat (1988, with Denise Crosby), Miracle Mile (1988, with Denise Crosby, Brian Thompson, and Jenette Goldstein), Bride of Re-Animator (1990, with Jeffrey Combs, Chuck Hicks, and Cherie Tash), Reservoir Dogs (1992, with Lawrence Tierney and Pat McGroarty), Army of Darkness (1992, with Patricia Tallman, Dennis Madalone, Tom Morga, and Brian J. Williams), Pulp Fiction (1994, with Cameron, Christopher Doyle, Scott McElroy, and Dennis Madalone), Kill Bill: Vol. 1 & 2 (2003-2004, with Monica Staggs and Angela Meryl), and the stunt documentary Double Dare (2004, with Monica Staggs).