Guatemala Surgery Air Force Lt. Col. Jacob Riis, center, an orthopedic surgeon, performs surgery on a Guatemalan patient during Health Engagement Assistance Response Team 2022, known as HEART 22, at Hospital Regional de Occidente in Quetzaltenango, Guatemala, Aug. 30, 2022. Riis is assigned to 355th Medical Group at Davis-Monthan Air Force Base, Tuscon, Ariz. SHARE IMAGE: Download Image: Full Size (1.57 MB) Tags: humanitarian Photo By: Staff Sgt. Dustin Biven VIRIN: 220829-A-ED017-014.JPG Photo Gallery