NASA's Marshall Space Flight Center showcased it's various projects for the public in Huntsville, Alabama's Big Spring Park. Exhibits were displayed by all of the various directorates of the Center with employee volunteers explaining all aspects of their projects. Adding to the festivities was the attendance of retired NASA astronaut Robert "Hoot" Gibson. “Hoot� Gibson reminisces about his history as an astronaut and takes questions from the audience at NASA Day in the Park.