Col. (Dr.) Connie McNabb, Texas Military Forces State Joint Surgeon; Dr. David Lakey, commissioner of the Department of State Health Services (DSHS); and Evelyn Delgado, DSHS assistant commissioner for Family Community Health Services, listen to Chief Master Sgt. Rodney Christa, 433rd Aerospace Evacuation Squadron superintendent, brief them prior to boarding a C-17 aircraft. Colonel McNabb and the DSHS guests visited Lackland Air Force Base Feb. 7 to learn about the C-17 and its medical evacuation capabilities. (TXMF photo by Tech. Sgt. Rene Castillo)