STS083-305-017 (4-8 April 1997) --- Astronaut Janice E. Voss, payload commander, displays a pleasant countenance following a successful test at the Combustion Module-1 (CM-1). The test was designed to study the Structures of Flame Balls at Low Lewis (SOFBALL) numbers. The CM-1 facility accommodates a number of experiments using different chamber inserts.