This is interesting. With the exception of crossing the US-Canadian border in personal vehicles (many, many) times, this is my first international travel, and certainly my first by air. When crossing the US-Canadian border in an automobile, you only have to deal with the incoming customs service. So, on the way into Canada you deal with Canadian customs, and on the way back you deal with US customs. Which makes sense, because you would think the receiving country would be the most interested in who's entering (and what they may be trying to bring with them). So, why the heavy scrutiny by Jamaican customs on the way out of Jamaica?