The crew of the Space Shuttle Discovery from its second mission STS-51-A, after their return to earth, 1985. From left to right, Commander Frederick...
City Manager of San Antonio, State of Texas Sheryl Sculley and former U.S. Comptroller General Hon. David M. Walker speak at the 2016 Concordia...
City Manager of San Antonio, State of Texas Sheryl Sculley and former U.S. Comptroller General Hon. David M. Walker speak at the 2016 Concordia...
City Manager of San Antonio, State of Texas Sheryl Sculley and former U.S. Comptroller General Hon. David M. Walker speak at the 2016 Concordia...
City Manager of San Antonio, State of Texas Sheryl Sculley, Former U.S. Comptroller General Hon. David M. Walker, Office of Public-Private...
City Manager of San Antonio, State of Texas Sheryl Sculley, Former U.S. Comptroller General Hon. David M. Walker, Office of Public-Private...
City Manager of San Antonio, State of Texas Sheryl Sculley, Former U.S. Comptroller General Hon. David M. Walker, Office of Public-Private...
City Manager of San Antonio, State of Texas Sheryl Sculley, Former U.S. Comptroller General Hon. David M. Walker, Office of Public-Private...
City Manager of San Antonio, State of Texas Sheryl Sculley, Former U.S. Comptroller General Hon. David M. Walker, Office of Public-Private...
City Manager of San Antonio, State of Texas Sheryl Sculley, Former U.S. Comptroller General Hon. David M. Walker, Office of Public-Private...
Former U.S. Comptroller General Hon. David M. Walker, Office of Public-Private Partnerships Director Washington, D.C., Seth Miller Gabriel speak at...
Former U.S. Comptroller General Hon. David M. Walker, Office of Public-Private Partnerships Director Washington, D.C., Seth Miller Gabriel, Former...
Former U.S. Comptroller General Hon. David M. Walker speaks at the 2016 Concordia Summit - Day 1 at Grand Hyatt New York on September 19, 2016 in New...
Former U.S. Comptroller General Hon. David M. Walker speaks at the 2016 Concordia Summit - Day 1 at Grand Hyatt New York on September 19, 2016 in New...
Former U.S. Comptroller General Hon. David M. Walker speaks at the 2016 Concordia Summit - Day 1 at Grand Hyatt New York on September 19, 2016 in New...
Former U.S. Comptroller General Hon. David M. Walker speaks at the 2016 Concordia Summit - Day 1 at Grand Hyatt New York on September 19, 2016 in New...
City Manager of San Antonio, State of Texas Sheryl Sculley, Former U.S. Comptroller General Hon. David M. Walker speak at the 2016 Concordia Summit -...
City Manager of San Antonio, State of Texas Sheryl Sculley, Former U.S. Comptroller General Hon. David M. Walker speak at the 2016 Concordia Summit -...
City Manager of San Antonio, State of Texas Sheryl Sculley, Former U.S. Comptroller General Hon. David M. Walker speak at the 2016 Concordia Summit -...
City Manager of San Antonio, State of Texas Sheryl Sculley, Former U.S. Comptroller General Hon. David M. Walker, Office of Public-Private...
City Manager of San Antonio, State of Texas Sheryl Sculley, Former U.S. Comptroller General Hon. David M. Walker, Office of Public-Private...
City Manager of San Antonio, State of Texas Sheryl Sculley, Former U.S. Comptroller General Hon. David M. Walker, Office of Public-Private...
City Manager of San Antonio, State of Texas Sheryl Sculley, Former U.S. Comptroller General Hon. David M. Walker, Office of Public-Private...
City Manager of San Antonio, State of Texas Sheryl Sculley, Former U.S. Comptroller General Hon. David M. Walker, Office of Public-Private...
City Manager of San Antonio, State of Texas Sheryl Sculley, Former U.S. Comptroller General Hon. David M. Walker, Office of Public-Private...
City Manager of San Antonio, State of Texas Sheryl Sculley, Former U.S. Comptroller General Hon. David M. Walker, Office of Public-Private...
City Manager of San Antonio, State of Texas Sheryl Sculley, Former U.S. Comptroller General Hon. David M. Walker, Office of Public-Private...
City Manager of San Antonio, State of Texas Sheryl Sculley, Former U.S. Comptroller General Hon. David M. Walker, Office of Public-Private...
Clive Efford MP, Helen Grant MP, SJA Chairman David Walker and John Leech MP answer questions during the SJA Sporting Question Time at Houses of...
Clive Efford MP, Helen Grant MP, SJA Chairman David Walker and John Leech MP answer questions during the SJA Sporting Question Time at Houses of...
American NASA astronaut David M Walker assisted by American NASA astronaut Michael L Gernhardt as he prepares his partial-pressure launch and entry...
American NASA astronaut Kenneth Cockrell, American NASA astronaut James Voss, and American NASA astronaut David M Walker on the Space Shuttle...
Crewmembers of STS-69 in the aft area of the middeck of the Space Shuttle Endeavour on STS-69, 7th to 18th September 1995.
American NASA astronaut Guion Bluford, American NASA astronaut David M Walker , American NASA astronaut Robert D Cabana, American NASA astronaut...
The crew of NASA's STS-30 mission in front of the Space Shuttle Atlantis, Orbiter Vehicle 104, at Edwards Air Force Base in California, after landing...
The crew of NASA's STS-30 mission leave the Space Shuttle Atlantis, Orbiter Vehicle 104, at Edwards Air Force Base in California, after landing on...
The crew of NASA's STS-30 mission leave the Space Shuttle Atlantis, Orbiter Vehicle 104, at Edwards Air Force Base in California, after landing on...
Commander David M 'Dave' Walker in the forward flight deck of the Space Shuttle Atlantis during NASA's STS-30 mission, 8th May 1989.He is wearing a...
The crew of NASA's STS-30 mission pose in front of the mid-deck starboard wall-mounted sleep restraints on the Space Shuttle Atlantis , 8th May 1989....
The prime crew of NASA's upcoming STS-30 mission on the Space Shuttle Atlantis, at the Johnson Space Center in Houston, Texas, March 1989. The...
The crew of the STS-51A Space Shuttle Discovery mission, American astronauts, mission specialist Dale A Gardner mission specialist Joseph Allen,...