March, and at Talamone during the end of April. The main unit began on 3 January 2008 at Pinewood Studios. The 007 Stage was used for the fight in the art gallery, and an MI6 safehouse hidden within the city's cisterns, while other stages housed Bond's Bolivian hotel suite, and the MI6 headquarters. Interior and exterior airport scenes were filmed at Farnborough Airfield and the snowy closing scenes were filmed at the Bruneval Barracks in Aldershot. Shooting in Panama City began on 7 February 2008 at Howard Air Force Base. The country doubled for Haiti and Bolivia, with the National Institute of Culture of Panama standing in for a hotel in the latter country. A sequence requiring several hundred extras was also shot at nearby Colón. Shooting in Panama was also carried out at Fort Sherman, a former US military base on the Colón coast. Forster was disappointed he could only shoot the boat chase in that harbour, as he had a more spectacular vision for the scene. Officials in the country worked with the locals to "minimise inconvenience" for the cast and crew, and in return hoped the city's exposure in the film would increase tourism. The crew was going to move to Cusco, Peru for ten days of filming on 2 March, but the location was cancelled for budget reasons. Twelve days of filming in Chile began on 24 March at Antofagasta. There was shooting in Cobija, the Paranal Observatory, and other locations in the Atacama Desert. Forster chose the desert and the observatory's ESO Hotel to represent Bond's rigid emotions, and being on the verge of committing a vengeful act as he confronts Greene in the film's climax. During filming in Sierra Gorda, Chile, the local mayor, Carlos Lopez, staged a protest because he was angry at the filmmakers' portrayal of the Antofagasta Region as part of Bolivia. He was arrested, detained briefly, and put on trial two days later. Eon dismissed his claim that they needed his permission to film in the area. Michael G. Wilson explained that Bolivia was appropriate to the plot, because of the country's history of water problems, and was surprised the two countries disliked each other a century after the War of the Pacific. In a poll by Chilean daily newspaper La Segunda, 75 percent of its readers disagreed with Lopez's actions, due to the negative image of Chile they felt