American Airlines flight 954 gets ready to take off at Toncontin International Airport in Tegucigalpa on September 27, 2009. Two Organization of the American States' (OAS) representatives and two Spanish diplomats were prevented from entering Honduras, a diplomat source informed. Stakes rose in Honduras Sunday after ousted leader Manuel Zelaya, holed up at Brazil's embassy in Tegucigalpa, called on his supporters for a final offensive -- and coup leaders respond by giving Brazil a harsh warning.