In this handout from the Ministry of Defence, Royal Air Force VC10 and Tristar air-to-air refuelling aircraft support the first UK air combat mission in support of UN Resolution 1973 in flight on March 19, 2011. Col Muammar Gaddafi has vowed a “long war” against the “crusader aggression” after over 100 missiles were fired by the US and UK, during multi-national action aimed at enforcing a UN-mandated no-fly zone. (Photo by SAC Neil Chapman/MoD via Getty Images)

In this handout from the Ministry of Defence, a RAF Tornado GR4 aircraft is prepared for launch, the first UK air combat mission in support of UN Resolution 1973, at RAF Marham on March 19, 2011 in Norfolk, England. (Photo by SAC Lisa Conway/MoD via Getty Images)

RAF Tornado GR4 aircraft is prepared for launch, the first UK air combat mission in support of UN Resolution 1973, at RAF Marham on March 19, 2011 in Norfolk, England. (Photo by SAC Lisa Conway/MoD via Getty Images)

In this handout from the Ministry of Defence, Tornado GR4 aircraft and personnel from RAF Marham conduct planning and preparation for the first UK air combat mission in support of UN Resolution 1973, at RAF Marham on March 18, 2011 in Norfolk, England. (Photo by SAC Lisa Conway/MoD via Getty Images)

In this handout from the Ministry of Defence, Royal Air Force VC10 and Tristar air-to-air refuelling aircraft support the first UK air combat mission in support of UN Resolution 1973 in flight on March 19, 2011. (Photo by SAC Neil Chapman/MoD via Getty Images)