(written from a Production point of view)
Bobby Dalton Aldridge (born 23 January 1966; age 50) is a stuntman and stunt actor from Blythe, California who appeared as an armed guard in the Star Trek: Voyager episode "Concerning Flight". He received no on-screen credit for his appearance and was identified by the name tag of his costume which was sold off on the It's A Wrap! sale and auction on eBay where his name was misspelled as Bobby Aldrich. 
He has performed stunts in several television series, including episodes of Hunter (1989, episode Partners, with Michael Canavan, Scott Jaeck, and Kathryn Graf), The Adventures of Brisco County Jr. (1993, episode Pirates, with Robert O'Reilly and coordinated by Christopher Doyle), Without a Trace (2002, episode Birthday Boy, with Enrique Murciano and Megan Gallagher, and coordinated by Dennis Madalone), Six Feet Under (2003, episode Twilight, with James Cromwell and Jim Beaver), Deadwood (2005-2006, in several episodes alongside regulars Jim Beaver, Brad Dourif, Leon Rippy, Titus Welliver, and Allan Graf), and Criminal Minds (2007, episode No Way Out, Part II: The Evilution of Frank, with Keith Carradine).
Aldridge has also performed in a number of feature films such as Back to the Future Part III (1990, starring Christopher Lloyd), City Slickers (1991, with Noble Willingham and Tracey Walter), the sequel Terminator 2: Judgment Day (1991, with Earl Boen, Jenette Goldstein, Nikki Cox, and Joel Kramer), Batman Returns (1992), the comic adaptation Tank Girl (1995, starring Lori Petty, Malcolm McDowell, and Iggy Pop), the comedy Bean (1997, with Harris Yulin and Larry Drake), the remake Planet of the Apes (2001), Spider-Man (2002, with Kirsten Dunst), and the action films 2 Fast 2 Furious (2003) and its sequel The Fast and the Furious: Tokyo Drift (2006).