(written from a Production point of view)
In 2003 he won a Taurus World Stunt Award for best fire stunt in Red Dragon and in 2005 he was nominated twice for best work with a vehicle in the films Taxi and The Punisher. In 2007 he was nominated for another Taurus World Stunt Award for best specialty stunt in the comedy film Unaccompanied Minors, alongside Star Trek stunt performers Chrissy Weathersby and Gary Kasper. Johnston was the personal stunt double for actor Bruce Willis in most of his films between 1985 and 1991. He has also doubled for stars such as Billy Wirth, Christian Slater, Vince Vaughn, Adrian Pasdar, and Colin Farrell.
Among his stunt resume are films such as Gotcha! (1985), Blind Date (1987, with John Larroquette, George Coe, and Georgann Johnson), Die Hard (1988), The Hunt for Red October (1990, with Gates McFadden), Die Hard 2 (1990), The Bonfire of the Vanities (1990, with Kim Cattrall, Saul Rubinek, Richard Libertini, Marjorie Monaghan, Kirsten Dunst, Don McManus, Jon Rashad Kamal, Richard Gilbert-Hill, Marie Chambers, F. Murray Abraham, Terry Farrell, and stunts by Peewee Piemonte), Hook (1991), Batman Returns (1992), Death Becomes Her (1992, with William Frankfather, Clement von Franckenstein, Jim Jansen, Ron Stein, and stunts by Denise Lynne Roberts and Debby Lynn Ross), Addams Family Values (1993, with Christopher Lloyd), Speed (1994), Casper (1995), Broken Arrow (1996), Barb Wire (1996), The Lost World: Jurassic Park (1997, with Robin Sachs, Ian Abercrombie, Geno Silva, Harry Hutchinson, Katy Boyer, Marjean Holden, J. Patrick McCormack, and stunts by Todd Bryant, Chris Durand, Gary Epper, Tommy J. Huff, Steve Kelso, Henry Kingi, Sr., Diana R. Lupo, Tom Lupo, Rich Minga, Tom Morga, Manny Perry, Pat Romano, Robin Bonaccorsi, Jarrid Eddo, and Dorian Kingi), Inspector Gadget (1999), The Mexican (2001), K-PAX (2001), Minority Report (2002, with Neal McDonough and Patrick Kilpatrick), xXx (2002), S.W.A.T. (2003), National Treasure (2004), Jarhead (2005), Next (2007), Pirates of the Caribbean: At World's End (2007), and Live Free or Die Hard (2007, with Tim Russ, Chris Palermo, Tim de Zarn, and stunts by Chris Antonucci, Gregory J. Barnett, Mark Chadwick, Shawn Crowder, Danny Downey, Mickey Giacomazzi, Johnny Martin, Mark Riccardi, and Boni Yanagisawa).
He has also performed stunts in television series such as Moonlighting (1985, with Robert Ellenstein, Sam Hennings, Brian Thompson, and stunts by Gregory J. Barnett and Pat Romano), Alias, and Lost (starring Terry O'Quinn and Daniel Dae Kim).