Former employees return for Stennis Old Timers' Day Sandra Piernas (right), an employee at NASA's John C. Stennis Space Center, serves NASA retiree Dewey Little during 2010 Old Timers' Day activities May 14. Each year, the Stennis Recreational Association welcomes back former employees for a meal and time of fellowship at the facility's Cypress House. The event offers current employees the opportunity to hear stories about early work at the center. Stennis was established in the 1960s to test engines and rocket stages for the Apollo Program.