Operation Enduring Freedom – Horn of Africa al-Qaeda linked terrorists continued in 2009 when on 14 September several U.S. Navy helicopters launched a raid in Baraawe against Saleh Ali Saleh Nabhan, killing him as well as five other militants. Also in 2009, Operators from the SAS and the SRR were deployed to Djibouti as part of Combined Joint Task Force – Horn of Africa to conducting operations against Islamist terrorists in Somalia; carrying out missions focusing on surveillance and targeting of terrorists, alongside their US counterparts, they have also been carrying out this role in Yemen. On 25 January 2012, two U.S. Navy Seal teams raided a
Natural horn for natural horn. Benjamin Britten's "Serenade for Tenor, Horn and Strings", though written for the modern horn, makes notable use of the F harmonic series and has been recorded at least once on a natural horn. György Ligeti's "Hamburg Concerto" makes a great use of the natural horn and of natural sounds on the modern horn in the solo part and requires four natural horns in the orchestra. Below lists natural horn keys with their corresponding fingering on the modern horn. If a piece of music says the key on the left you can press the key combination on the