Vice President Mike Pence shakes hands with NASA Administrator Jim Bridenstine after being intruduced prior to speaking in the Teague Auditorium at NASA's Johnson Space Center, Thursday, Aug. 23, 2018 in Houston, Texas. Vice President Pence spoke about the future of human space exploration and the agency’s plans to return to the Moon as a forerunner to future human missions to Mars, stating that “soon and very soon American astronauts will return to space on American rockets launched from American soil." Photo Credit: (NASA/Joel Kowsky)