NASA Administrator Jim Bridenstine, right, speaks with President and CEO of the Challenger Center, Lance Bush, left, and Cheryl McNair, the widow of Challenger astronaut Ron McNair, after giving keynote remarks at the Challenger Center Annual Conference, Wednesday, August 14, 2019 at the Lockheed Martin Global Vision Center in Arlington, VA. Photo Credit: (NASA/Aubrey Gemignani)

NASA Administrator Jim Bridenstine gives keynote remarks at the Challenger Center Annual Conference, Wednesday, August 14, 2019 at the Lockheed Martin Global Vision Center in Arlington, VA. Photo Credit: (NASA/Aubrey Gemignani)

NASA Administrator Jim Bridenstine gives keynote remarks at the Challenger Center Annual Conference, Wednesday, August 14, 2019 at the Lockheed Martin Global Vision Center in Arlington, VA. Photo Credit: (NASA/Aubrey Gemignani)

NASA Administrator Jim Bridenstine answers a question from a member of the audience at the Challenger Center Annual Conference, Wednesday, August 14, 2019 at the Lockheed Martin Global Vision Center in Arlington, VA. Photo Credit: (NASA/Aubrey Gemignani)

NASA Administrator Jim Bridenstine gives keynote remarks at the Challenger Center Annual Conference, Wednesday, August 14, 2019 at the Lockheed Martin Global Vision Center in Arlington, VA. Photo Credit: (NASA/Aubrey Gemignani)

NASA Administrator Jim Bridenstine gives keynote remarks at the Challenger Center Annual Conference, Wednesday, August 14, 2019 at the Lockheed Martin Global Vision Center in Arlington, VA. Photo Credit: (NASA/Aubrey Gemignani)

NASA Administrator Jim Bridenstine gives keynote remarks at the Challenger Center Annual Conference, Wednesday, August 14, 2019 at the Lockheed Martin Global Vision Center in Arlington, VA. Photo Credit: (NASA/Aubrey Gemignani)

NASA Administrator Jim Bridenstine gives keynote remarks at the Challenger Center Annual Conference, Wednesday, August 14, 2019 at the Lockheed Martin Global Vision Center in Arlington, VA. Photo Credit: (NASA/Aubrey Gemignani)

NASA Administrator Jim Bridenstine gives keynote remarks at the Challenger Center Annual Conference, Wednesday, August 14, 2019 at the Lockheed Martin Global Vision Center in Arlington, VA. Photo Credit: (NASA/Aubrey Gemignani)

NASA Administrator Jim Bridenstine takes a selfie with the audience at the Challenger Center Annual Conference, Wednesday, August 14, 2019 at the Lockheed Martin Global Vision Center in Arlington, VA. Photo Credit: (NASA/Aubrey Gemignani)

NASA Administrator Jim Bridenstine gives keynote remarks at the Challenger Center Annual Conference, Wednesday, August 14, 2019 at the Lockheed Martin Global Vision Center in Arlington, VA. Photo Credit: (NASA/Aubrey Gemignani)

NASA Administrator Jim Bridenstine gives keynote remarks at the Challenger Center Annual Conference, Wednesday, August 14, 2019 at the Lockheed Martin Global Vision Center in Arlington, VA. Photo Credit: (NASA/Aubrey Gemignani)

NASA Administrator Jim Bridenstine, standing left, is introduced by President and CEO of the Challenger Center, Lance Bush, just before giving keynote remarks at the Challenger Center Annual Conference, Wednesday, August 14, 2019 at the Lockheed Martin Global Vision Center in Arlington, VA. Photo Credit: (NASA/Aubrey Gemignani)