arrived at Guinea-Bissau on 15 June and the next day entered Geba River. Its Marine force—led by the DAE operatives—landed and occupied the Port of Bissau, starting the evacuation of Portuguese citizens and foreign nationals to the ships. Later, additional people were collected from other parts of the coast of Guinea-Bissau, using rubber boats and helicopters, in a total of more than 1,200 rescued citizens. On 28 June, under the mediation of the Community of Portuguese Language Countries, the negotiations for a ceasefire between the belligerents began on board the frigate NRP Vasco da Gama. Operation Crocodile terminated on 21 July 1998, with the Portuguese naval force leaving the waters of Guinea-Bissau and being rendered by the frigate . Portuguese Navy Marine contingents have also participated in United Nations peacekeeping missions in Kinshasa (Zaire, 1997) and Congo (1998), East Timor (1999–2004), the European Union Mission in the Democratic Republic of Congo in 2006, and the NATO fleet off the coast of Somalia, where Portugal's Navy has played a prominent role. During the flooding of the Save River, in Mozambique (2000) a detachment of Portuguese Marines conducted flood rescue operations as part of the humanitarian relief effort. During the onset of East Timor's independence from Indonesia in 1999, Portugal sent two frigates and various troops to aid its former colony in the Pacific Ocean. NRP Vasco da Gama and NRP Hermenegildo Capelo remained in the area until mid-2001. A company of 155 Marines was also sent to the territory as part of Portugal's UN peacekeeping role while the situation was volatile. Since 2004 a smaller detachment of Portuguese Marines is integrated in the Timor Military Liaison Group closely coordinated with the Portuguese National Republican Guard (GNR) contingent stationed in the capital, Dili, and the Armed Forces of Timor. The 2000s saw the reception of the s (replacing the old Comandante João Belo class), of the s (replacing the old Albacora class) and of the Portuguese designed and built s (intended to gradually replace the João Coutinho-class and Baptista de Andrade-class corvettes). The Vasco da Gama-class frigates Álvares Cabral and Corte Real have regularly contributed to long-range NATO exercises in the Indian Ocean, and both have served as NATO task-force flagships in the mission against Piracy in Somalia. During 2009 and January 2010, the NATO fleet in the Gulf of Aden was commanded by the Portuguese Navy, who received the award of