National Geographic Society
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Sean Riley (known as “Riley” to his friends) is a master rigger, engineering enthusiast and set designer with an expertise in suspension and load transfer involving large masses and difficult access. Creating functional and architecturally sound installations, he has risen to the height of his field. He is the founder and principal rigging designer for Gravity Design Inc., a company based in San Francisco, Calif., that provides innovative rigging and force management solutions for a wide variety of clients all over the world — from circus acts to industrial installations.

Riley is always hands-on (welding, constructing, wiring), and though he is no stranger to high-risk responsibility, he has a flawless safety record.

His passion for mechanics is matched only by his passion for extreme adventure. He loves to pull on a diving wetsuit, arc up a blowtorch or dangle from a height that would have most people going weak in the knees — just for fun. He drives heavy machinery, jumps off bridges, rock climbs and is a back-country solo survivalist.

Riley studied theatre arts at University of California Santa Cruz and has taught college-level theatrical design.


World’s Toughest Fixes’ series producer Rob Kerr has been in television production for nearly 25 years and producing nonfiction for more than 10, covering a diverse range of genres including natural history, automotive, reality, sports, documentary and science. He has extensive experience as a producer, director, writer, editor and camera operator, and has shot on location on five of the world’s seven continents (Asia, Africa, Europe, Australia and North America).

He has produced for such popular cable series as “Mythbusters” for Discovery Channel and “Medical Incredible” for Discovery Health. Over the past 10 years alone, Kerr has produced close to 100 hours of programming for National Geographic, Discovery Networks, History Channel and Australian Networks (Channel Seven, Channel Nine and the Network Ten). For National Geographic Channel (NGC), he wrote and directed “Megaship,” a one-hour special in 2005, and for National Geographic Television & Film (NGT&F), he wrote and directed two specials, “Rock Eaters of Iceland” (2006) and “Hot Science” (2001).

Other program credits include “Weapon Masters,” “Blank Canvas,” “Garage Takeover,” “World Biker Build-Off,” “The Greenbrier Secrets,” “Double Agents” and “Corvette C6 – Rebuilding a Legend” (Discovery Channel); “Bringing Down the House” and “Quick Buck” (TLC); “History Makers/Risk Takers” (History Channel); “Mad Mike and Mark” (Animal Planet); “Body Doubles” (Channel Nine Australia); “Beyond Tomorrow” (ATN Seven Australia); “The Great Outdoors,” “Hot Property,” “Live Auction Special” and “Hot Auctions” (Network Seven Australia); “Gone Fishin’,” “The Craic Down Under,” “Drive Time” and “Bright Ideas” (Network Ten Australia).

Kerr has also produced music videos and numerous corporate videos, operated his own Avid postproduction studio and worked as a freelance journalist. He earned a Bachelor of Arts in English literature from the University of New South Wales in Sydney, Australia.