Staff Sgt. Castillo assists Maj. Cleereman as she performs a tooth extraction on a Guyanese farmer. Staff Sgt. David Castillo (left) assists Maj. Susan Cleereman (center) as she performs a tooth extraction on a Guyanese farmer during a medical civil assistance program at Kumaka, Guyana, on Aug. 12, 1997. The program is part of the joint-combined humanitarian Exercise New Horizon Guyana 1997. U.S. forces, the Guyana Defense Force and local community leaders are working together to accomplish engineer construction and medical projects. Castillo, of Chicago, Ill, is a radiology technician with the 126th Medical Squadron, Illinois Air National Guard. Cleereman, of Battle Creek, Mich., is a dentist from the 110th Medical Squadron, Michigan Air National Guard. SHARE: Download: Full Size (0.05 MB) Credit: VIRIN: 909602-P-LVT16-195.jpg Photo Gallery