Official websites use .mil
Secure .mil websites use HTTPS
U.S. Marine Corps 1st Lt. Josias Valdez, a motor transport platoon commander with Combat Logistics Battalion 1, Marine Rotational Force – Darwin 25.3, communicates with inbound MV-22B Ospreys during a mass casualty in the Northern Territory, Australia, July 21, 2025. The MASCAS drill enhances interoperability and readiness among U.S. Marines, Navy hospital corpsmen, and Australian Defence Force soldiers by conducting coordinated emergency medical response training in a simulated high-stress environment. Talisman Sabre is the largest bilateral military exercise between Australia and the United States advancing a free and open Indo-Pacific by strengthening relationships and interoperability among key allies and partners, while enhancing our collective capabilities to respond to a wide array of potential security concerns. Valdez is a native of Rio Rancho, New Mexico. (U.S. Marine Corps photo by Sgt. Brian A. Stippey)