We’re inviting social media users to apply for credentials to see the progress being made on sending humans to Mars. Visit us in-person on Aug. 17-18 at the Michoud Assembly Facility in New Orleans and at the Stennis Space Center near Bay St. Louis, Mississippi, for behind the scenes tours and to see the mighty RS-25 engine test firing. Apply now: http://go.nasa.gov/2aa0Yqy #NASASocia