Dr. Sam Dinkin
Sam Dinkin is just back from spending 3 months in India helping one of the cellular operators there buy billions of dollars of spectrum for 3G cell phone and WiMax internet service. Dr. Dinkin has been beating the drum for space commercialization since 2004 when he started writing for the Space Review. He was the founder of Space Shot which had memoranda of understandings with three suborbital and two orbital companies to offer flights as prizes including a flight for two around the Moon. Space Shot dissolved at the end of 2009 having awarded two Zero G flights. Dinkin has pledged to award a suborbital flight and will hold the drawing later this year. In addition to journalist and entrepreneur, he is a space investor, advocate, philanthropist and enthusiast. Since the last time he was on the show, he also captained the US contract bridge team that won a silver medal in Sao Paulo.

Cmdr. John Herrington
John Herrington received his commission from Aviation Officer Candidate School in March 1984 and was designated a Naval Aviator in March 1985. He reported to Patrol Squadron Thirty-One (VP-31) at the Moffett Field Naval Air Station, Mountain View, California for initial training in the P-3C Orion. His first operational assignment was with Patrol Squadron Forty-Eight (VP-48) where he made three operational deployments, two to the Northern Pacific based from Naval Air Station Adak, Alaska and one to the Western Pacific based from the Naval Air Station Cubi Point, Republic of the Philippines. While assigned to VP-48, Herrington was designated a Patrol Plane Commander, Mission Commander, and Patrol Plane Instructor Pilot. Following completion of his first operational tour, Herrington then returned to VP-31 as a Fleet Replacement Squadron Instructor Pilot. While assigned to VP-31 he was selected to attend the U.S. Naval Test Pilot School in Patuxent River, Maryland in January 1990. After graduation in December, 1990, he reported to the Force Warfare Aircraft Test Directorate as a project test pilot for the Joint Primary Aircraft Training System. Herrington conducted additional flight test assignments flying numerous variants of the P-3 Orion as well as the T-34C and the DeHavilland Dash 7. Following his selection as an Aeronautical Engineering Duty Officer, Herrington reported to the U.S. Naval Postgraduate School where he completed a Master of Science degree in Aeronautical Engineering in June 1995. Herrington was assigned as a special projects officer to the Bureau of Naval Personnel Sea Duty Component when selected for the astronaut program. He has logged over 4,000 flight hours in over 30 different types of aircraft. Selected by NASA in April 1996, Herrington reported to the Johnson Space Center in August 1996. He completed two years of training and evaluation, and was qualified for flight assignment as a mission specialist. Initially, Herrington was assigned to both the Shuttle and International Space Station Branches in support of Guidance Navigation and Control systems. Herrington was also assigned to the Flight Support Branch of the Astronaut Office where he served as a member of the Astronaut Support Personnel team responsible for Shuttle launch preparations and post-landing operations. In November 2002, he flew on STS-113 logging over 330 hours in space, including 3 EVAs totaling 19 hours and 55 minutes. Post-flight, Herrington was assigned as a Capsule Communicator (CAPCOM) supporting Shuttle and Space Station training and operations. In the summer of 2003, Herrington was detailed to support International Space Station training efforts in both the United States and Russia. Following this assignment, he became a member of the Extravehicular Activities (EVA) Branch supporting Russian/US EVA hardware and operations. For his last assignment, he was chosen to become the Chief Engineer for Safety and Mission Assurance (S&MA) at the Johnson Space Center. He was responsible for leading the S&MA engineering efforts in support of Space Shuttle and Space Station hardware and software integration and mission operations. On October 1, 2005, he retired from US Navy and left NASA to pursue a career in the commercial space industry. STS-113 Endeavour (November 23-Dec 7, 2002) was the sixteenth Shuttle mission to visit the International Space Station. Mission accomplishments included the delivery of the Expedition-Six crew, the delivery, installation and activation of the P1 Truss, and the transfer of cargo from Shuttle to the Station. During the mission Herrington performed three EVAs totaling 19 hours and 55 minutes. STS-113 brought home the Expedition-Five crew from their 6-month stay aboard the Station. Mission duration 13 days, 18 hours and 47 minutes. ROCKETPLANE LIMITED, INC. is a leader in the commercial space flight industry. “John is a NASA astronaut, however, it is his many spectacular talents and abilities that make him valuable to the Rocketplane team,” says Rocketplane President George French. “He is a military test pilot, knows flight avionics and astronautics, and knows the environment of space. To us, John is an asset in that he brings education, knowledge, experience, and skills to finish and test our spaceplane, which will regularly take civilian astronauts into space.” John will be flying the XP Spaceplane under his call name of John “Bone” Herrington.