Expats should avoid shaky legs, sweaty hands or stuttering when they go to the airport.
The Royal Canadian Mounted Police have told their Costa Rican counterparts that these are the signs of a possibly suspicious person. The Canadians have just given training to 22 officers who are with the Servicio de Vigilancia Aérea and the Policía de Control de Drogas.
Police officers here have been discovering drug mules for years. But now money laundering and air passengers carrying large amounts of money hidden on their bodies have become a priority. The crooks have a tendency to become nervous when passing through immigration and customs or when boarding a flight.
The officers at the airport continually use the type of observation techniques that the Canadians have enhanced.