assistant production manager (8 episodes, 2011-2012)
production manager (8 episodes, 2011-2012)
production executive: Discovery Channel (8 episodes, 2011)
executive in charge of production: Discovery Channel (4 episodes, 2011-2012)
production manager: Discovery Channel (4 episodes, 2011-2012)
vice president of production: Discovery Channel (4 episodes, 2011-2012)
executive vice president of production: Discovery Channel (3 episodes, 2011)