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
German horn excessive. Although the French firm Jérôme Thibouville-Lamy in about 1928 introduced a piston-valved double-horn with ascending third valve, designed in collaboration with the horn player Louis Vuillermoz, the double horn has continued to be identified mainly as a German horn. The double horn essentially combines two instruments into a single frame: one horn in F, and a second, higher horn keyed in B. Like the single horn it has three valves, but each has a double set of tubing, the first tuned in F and a shorter set in B. By depressing a fourth valve (usually operated by the thumb),