# US and UK Test SM-6 Missiles in SINKEX Exercise

The US Navy, in partnership with the UK Royal Navy and Royal Air Force, conducted a live-fire sinking exercise (SINKEX) in the North Atlantic region during Atlantic Thunder 2026. This operation involved firing SM-6 missiles and other munitions at the decommissioned frigate Klakring to evaluate long-range missile capabilities and enhance interoperability between allied naval and air forces. The exercise also focused on collecting data to inform future weapons development and tactical improvements.

- This joint exercise highlights ongoing collaboration between US and UK military branches, signaling potential future procurement and modernization efforts for missile systems and related technologies.
- Procurement professionals should note the emphasis on interoperability and data-driven weapons development, which may influence upcoming contract requirements and technology standards.
- Defense contractors specializing in missile systems, naval weaponry, and integrated combat systems may find opportunities aligned with evolving operational needs demonstrated in this exercise.
- The involvement of multiple service branches and international partners underscores the importance of cross-domain capabilities and multinational procurement strategies in future defense acquisitions.

**Jurisdictions:** federal
**Industries:** Defense & Military
**Topics:** Physical Infrastructure
**Published:** September 28, 2026

### Government Entities
- United States Navy (US Navy)
- Royal Navy
- Royal Air Force (RAF)
- United States Air Force (USAF)
- Naval Surface Warfare Center Carderock

### Sources
- [US, UK test SM-6, other missiles on SINKEX target frigate - Breaking Defense](https://breakingdefense.com/2026/09/us-uk-test-sm-6-other-missiles-on-sinkex-target-frigate) - Breaking Defense