JOINT BASE SAN ANTONIO-FORT SAM HOUSTON, Texas  –   Air Force Brig. Gen. Jeannine Ryder, San Antonio Market director, and Army Brig. Gen. Deydre Teyhen, market deputy director, explain the mission and scope of the San Antonio Market. The market oversees the healthcare delivery of over 240,000 DoD beneficiaries across the San Antonio metropolitan region. Market facilities include Brooke Army Medical Center, Wilford Hall Ambulatory Surgical Center, 10 stand-alone military treatment facilities, and over 100 specialty services – staffed by over 12,000 Army, Navy, Air Force, civilian and contract personnel.