Empresa Brasileira de Infraestrutura Aeroportuária (abr. Infraero) is a Brazilian government corporation founded in 1973, authorized by Law 5,862, being responsible for operating the main Brazilian commercial airports. In 2011 Infraero's airports carried 179,482,228 passengers, 1,464,484 tons of cargo, and operated 2,893,631 take-offs and landings. Presently it manages 45 airports. The company is present all over Brazil and employs approximately 23,000 employees and subcontracted workers nationwide. It is headquartered in the Infraero Building, in Brasília, Federal District. The company implements a workplan which covers practically all airports managed by it and which generates over 50 thousand jobs all over Brazil. The Brazilian airport infrastructure, which may match to the international standards, is being updated to meet the next years demand. The works are performed with the company's own revenue, mainly generated by the air cargo storage and custom duty, granting of commercial areas in the airports, boarding, landing and stay tariffs, and rendering of communication and air navigation auxiliary services. On 9 October 2009, it was announced that Infraero will invest in airports abroad: Infraero was invited by the Government of Paraguay to administer Silvio Pettirossi International Airport in Asunción and invited to participate in the privatization of Ruzyně Airport in Prague, Czech Republic, among other investments. On March 4, 2010, the government of Brazil announced that it would adopt the model of concession to airports. For this reason Infraero would become a concessionary rather than an administrator of the airports that it currently operates. The main consequence is the fact that Infraero will be able to open its capital and obtain resources necessary for infra-structure investments. Another consequence is that municipal or state governments would have it easier to change concessionaries, such as the intention announced on 28 August 2009 by Rosinha Matheus, the Mayor of Campos dos Goytacazes, who requested Infraero the transfer of the administration of Bartolomeu Lysandro Airport to the Municipality.