Todd E. Rasmussen, MD, FACS is a Professor and Vice Chair for Education in the Department of Surgery at Mayo Clinic, Rochester and a Senior Associate Consultant in the Division of Vascular and Endovascular Surgery. Prior to joining the Mayo Clinic, he had a 28-year career in the military, retiring as an Air Force Colonel in 2021. His most recent military assignment was as Associate Dean or Research at the Uniformed Services University of the Health Sciences and an attending surgeon at the Walter Reed National Military Medical Center. A native of Kansas, Rasmussen completed his undergraduate degree at the University of Kansas and his medical degree at Mayo Medical School (1993), followed by surgical training at Wilford Hall Medical Center at Lackland Air Force Base and vascular surgery specialty training at Mayo Clinic. Rasmussen had been assigned to Andrews Air Force Base just before 9.11.2001 and soon after began caring for the injured returning from Afghanistan at Walter Reed Army Medical Center. He began a series of deployments to the Air Force Theater Hospital on Balad Air Base as well as Bagram Air Base and the Afghan National Army Hospital in Kabul, Afghanistan. During this time in the Air Force, he initiated a research and innovation program aimed at developing a better understanding of vascular injury, hemorrhage control and shock as well as new approaches to managing these conditions. Rasmussen has led training missions in Morocco, Pakistan, and Russia, and his research efforts have resulted in hundreds of publications, including two textbooks, the Handbook of Patient Care in Vascular Disease and the 3rd edition of Rich's Vascular Trauma. He authored Vascular Injury Rates in the Wars in Iraq and Afghanistan in which he wrote that the frequency of vascular injury on the battlefield has increased by a factor of 5 between Vietnam and the current wars. Rasmussen was also one of the investigators in the Military Application of Tranexamic Acid in Trauma Resuscitation Study (MATTERS) which was a collaboration with British researchers on the use of a drug called tranexamic acid (TXA) in patients with severe bleeding. The study indicated that patients treated with TXA survived twice as often as those who did not receive the drug. Rasmussen is a co-inventor of REBOA (resuscitative endovascular balloon occlusion of the aorta), which is a minimally invasive approach used to sustain blood pressure and control bleeding in severely injured and shocked