If the F-35 upgrades known as Technology Refresh 3 aren't ready for deliveries to resume in the third quarter, Lockheed said it may slow down production. The strike followed Houthi attack on a merchant vessel Monday. Houthi rebels launched an attack Friday morning after a U.S.-U.K. strike on more than 60 targets in Yemen. The delays could have a cascading effect that hurts the Air Force’s ability to manage its units worldwide. The Marine Corps already has deactivated some Harrier and Hornet squadrons as part of the transition to the F-35B and F-35C. The Pentagon has also paused negotiations on a performance-based logistics contract for the F-35 after cost and performance estimates underwhelmed. The number of attacks on U.S. troops in the Middle East has risen to 66. The Navy requested a cap increase on the number of marine mammals it is allowed to unintentionally harm during Pacific training. The unidentified detachment will deter further conflict and help protect troops already in the Middle East, the Pentagon said. The total number of drone attacks has come to 'at least' 23. Load More