NASA Photo ID: S82-32870 File Name: 10060752.jpg Film Type: 120 cn Date Taken: 06/24/82 Title: STS-4 crew at St. Louis division of McDonnell Douglas with CFES experiment Description: STS-4 crew at St. Louis division of McDonnell Douglas with Constant Flow Electrophoresis System (CFES) experiment training. Astronaut Thomas K. Mattingly, II., STS-4 commander, looks over the CFES (32869); Astronaut Henry W. Hartsfield, Jr., STS-4 pilot, checks out the sample pump on the CFES (32870).