During the St. Barbara’s Day celebration at The Clubs at Quantico on Friday, guest of honor Brig. Gen. Joseph Shrader, commander of Marine Corps Systems Command, and Col. Timothy Parker, commanding officer of Weapons Training Battalion, receive the colors. - During the St. Barbara’s Day celebration at The Clubs at Quantico on Friday, guest of honor Brig. Gen. Joseph Shrader, commander of Marine Corps Systems Command, and Col. Timothy Parker, commanding officer of Weapons Training Battalion, receive the colors.