the MoD to ask MBDA to convert more missiles to the dual-mode version. 150 dual-mode missiles had been ordered in December 2010, but according to the Royal United Services Institute, stocks of usable dual-mode missiles fell to single figures at one stage of the Libya campaign. The 500th dual-mode Brimstone was delivered in March 2012, at which time over 200 had been fired in combat. The single-mode missile was not fired in combat until 15 September 2011 when a pair of RAF Tornado GR4 of IX(B) Squadron fired 22 missiles (including a salvo of 12 by one aircraft) against an armoured column near Sebha/Sabha, 400 miles south of Tripoli. In September 2014, Tornado GR4 strike aircraft of No. 2 Squadron RAF began flying armed sorties over Iraq in support of Operation Shader, the UK's contribution to the Military intervention against the Islamic State of Iraq and the Levant. On September 30, the aircraft flew their first bombing raids, engaging a heavy artillery position with a Paveway IV laser-guided bomb, and an armed pickup truck with a Brimstone air-to-ground missile. Brimstone is the preferred weapon for these kinds of targets due to its effectiveness against moving targets. In December 2015 the UK started using Brimstone missiles in Syria. Export sales Around £10 million of Brimstones from the RAF stock were sold to the Royal Saudi Air Force for use on its Tornados. In April 2011, the RAF's Assistant Chief of the Air Staff Air Vice-Marshal Baz North reported that the missiles were "being sought by both the United States of America and the French" in the light of Brimstone's success in Libya. France's DGA procurement agency held meetings in late May 2011 to discuss a lightweight air-to-surface weapon for the Dassault Rafale aircraft; Stéphane Reb of the DGA would merely say that "Brimstone is a solution, but it's not the only option". In early 2014 the US Congress' House Armed Services Committee showed interest again in the missile; high-ranking members of the US armed services have stated they "like it". The French Air Force were still thinking about a purchase in March 2012, with a prime consideration being lower collateral damage compared to the AASM missile. India made a request for information about integrating Brimstone on their Sukhoi Su-30MKI fighter fleet. In July 2014, it was revealed that the United States Navy was studying the Dual Mode Brimstone for use on