The President of the Portuguese Association of Travel and Tourism Agencies (APAVT), Pedro Costa Ferreira, has worryingly stated that the Foreigners and Border Service (SEF) announcement that they intend to carry out industrial action at many national airports, including Madeira, the Azores, Faro or Lisbon, is already being queried by travel operators, especially British tour operators, who at the moment are considered to be a national lifeline.