Approximately 75 Marines from Marine Corps Base Quantico and the surrounding area attended the 2013 Joint Women’s Leadership Symposium at the Gaylord National Resort and Convention Center in Washington, D.C., on June 6-7, 2013. - Approximately 75 Marines from Marine Corps Base Quantico and the surrounding area attended the 2013 Joint Women’s Leadership Symposium at the Gaylord National Resort and Convention Center in Washington, D.C., on June 6-7, 2013.