I get it, the question seems as if I'm reaching out for answers from experienced smugglers! But no. As a matter of fact, I'm trying to get answers on air surveillance & security.
Love it or hate it, these kind of smuggles are being done all over the world. However, recently I heard a story from a retired soldier stating that he used to know people who knew people who smuggled jewelries, hard drugs, guns and even people from middle eastern countries to Europe, specifically, Germany! Via planes!
In fact, he said some stuff was too valuable for them to "risk it" by land transports. He added that the pilots were experienced World War II pilots who specialized in flying at high speed in very low altitudes to make deliveries for infantry units on distress, making them unnoticed on radars and unstoppable for air defense systems.
So that's for World War II, which ended on 1945, so the question is, how can people still do this considering all the enhancements and improvements or even inventions (which some boldly have "foolproof" labels attached to their names) implemented on radar and satellite technologies? Especially on a country like Germany, with superb defense and military status?