The Royal Air Force (RAF) says its Sentinel R1 aircraft has carried out the last operational flight from RAF Waddington.
Airwolfhound from Hertfordshire, UK, CC BY-SA 2.0, via Wikimedia Commons
The aircraft, which has a Airborne Stand-off Radar (ASTOR) from Raytheon, has been in service for 14 years.
For more information, hit the Source below