U.S. Forces Japan and Japan Self-Defense Forces stress-test joint disaster relief in JXR 26

Yokota Air Base, Japan — U.S. Forces Japan and the Japan Self-Defense Forces Joint Operations Command wrapped up Joint Exercise Rescue 2026 on July 24 after a week of large-scale, bilateral training focused on humanitarian assistance and disaster relief. The July 20–24 drill was designed to test and strengthen how the allies coordinate during fast-moving emergencies.

This iteration emphasized synchronizing responses to complex, compounding crises. U.S. personnel operated in a supporting role while the Japanese Ministry of Defense led the effort. “JXR allows our U.S. and Japanese forces to stress-test our coordination mechanisms and ensure that, in the event of a real-world catastrophe, our bilateral response is rapid and effective,” said U.S. Air Force Lt. Gen. Stephen Jost, USFJ commander. “Our primary focus is to bolster our alliance with our partner nation and support the Government of Japan’s lifesaving efforts to mitigate the impact of severe disasters.”

Planners built the scenarios around a maximum-class Nankai Trough megathrust earthquake followed by a tsunami striking the Kinki region during extreme summer heat. The simulated catastrophe drove widespread infrastructure failure, utility outages and mass casualties, forcing responders to launch immediate rescue operations.

Training centered on tailored logistics and personnel support. Units practiced delivering bilateral medical care, orchestrating complex evacuation options and sustaining life-support operations, including a transition from initial lifesaving actions to longer-term sanitation management. “Tying in the operational logistics across the theater down to what we call the ‘last tactical mile’ is a deliberate planning effort we have to conduct with the Japanese,” said U.S. Marine Corps Col. Christopher Kim, USFJ director of logistics. “We both have logistics capabilities that can enhance the effects we need in the time and fashion we need them.”

The exercises also pressed medical teams to work through cross-border care policies that have posed obstacles in past relief efforts. “From a lessons-learned standpoint, this exercise is about the ability to know who your counterparts are, understand each other’s capabilities and how we could complement each other in any kind of scenario,” said USAF Col. John Cotton, USFJ command surgeon. “We are in coordination with the Japanese MOD and Ministry of Foreign Affairs to work through that so we can provide care to a stricken population.”

To carry plans from headquarters to the field, the partners prioritized bilateral communication, reinforcing channels to share timely, unified and accurate information with one another and with the public throughout the simulated crisis.

Officials said the exercise underscored progress in USFJ’s transformation toward a joint force headquarters and sharpened combined readiness for real-world disasters. “This week represented a great opportunity for us to continue to stress ourselves, humbly identify shortcomings, learn from them and make corrections,” said Jost. “That preparation and experience, when intersecting with a crisis, is what equals success.”