- Houthi rebels say they downed a US MQ-9 Reaper drone in Yemen, adding it's the eighth one in a year.
- Debates continue over the MQ-9's cost, efficiency, and vulnerability in contested airspaces.
- The US Navy said military force alone would not be enough to stop the Houthis.
Houthi rebels claim to have shot down another MQ-9 Reaper drone in Yemen.