DOCTOR'S DOSES U.S. Army Maj. (Dr.) Matthew Johnson talks to a Dominican mother about medication doses during a medical readiness training exercise in Esperanza, Dominican Republic, June 4, 2011. Johnson is a physician assigned to the 228th Combat Support Hospital. SHARE: Download: Full Size (0.08 MB) Credit: VIRIN: 905183-E-RKS67-861.jpg Photo Gallery