.Main Guidance, Ames Study CenterDan Hymer (Acting).Main Advise, Armstrong Trip Study CenterBrett Swanson.Principal Counsel, Glenn Proving Ground Callista M. Puchmeyer.Main Advise, Goddard Area Air Travel CenterDave G. Barrett.Chief Advice, Johnson Area CenterRandall T. Suratt (Performing).Main Guidance, Kennedy Space CenterAlex Vinson.Chief Advice, Langley Analysis CenterAndrea Z. Warmbier.Principal Advise, Marshall Space Trip CenterPam A. Bourque.Main Guidance, NASA Control Workplace at JPL James T. Mahoney.Principal Advice, NASA Shared Solution Center Ron Bald.Chief Advice, NASA Stennis Space Center Ron Bald.