Resolute Sentinel is a 12th Air Force (Air Force Southern)-led U.S. Southern Command (SOUTHCOM) exercise that was first held in 2021. Resolute Sentinel evolved out of the longstanding New Horizons and Beyond the Horizons, annual joint humanitarian assistance exercises in Latin America or the Caribbean. Resolute Sentinel provides joint training and improved readiness of U.S. and partner nation civil engineers, medical professionals and support personnel through humanitarian assistance activities. Resolute Sentinel 23 will be held in Peru and integrate combat interoperability and disaster response training in addition to medical exchanges, training and aid and construction projects.