The third-stage rocket motor of a U.S. Navy RIM-161 SM-3 Block IB surface-to-air missile was reportedly found in Iran yesterday, strongly suggesting that Arleigh Burke-class guided-missile destroyers—likely operating in the Eastern Mediterranean—are actively supporting Israel’s missile defense. The presence of the interceptor component in Iran likely stems from an exoatmospheric interception of an Iranian ballistic missile, with debris from the SM-3 falling back to Earth after the engagement.