U.S. Air Force Senior Airman Hunter Lambert, 633d Healthcare Operations Squadron aerospace medical service technician, and U.S. Army Sgt. Moriah Luiz, Langley Veterinary Clinic animal care technician, insert a catheter into a diesel K-9 simulator at Joint Base Langley-Eustis, Virginia, May 8, 2025. A catheter is a thin, flexible tube that is used in K-9 Tactical Combat Casualty Care to stabilize an injured working dog by quickly delivering medication. (U.S. Air Force photo by Airman 1st Class Thalia Bonte)