Yemen has been a trouble spot for more than a decade and explosives have always been the problem and they’ve always been relatively small. It was in 1998 that the U.S.S. Cole, a Navy Destroyer was attack while in Yemen. 17 sailors were killed and 39 were injured. A small craft approached the port side of the destroyer, and an explosion occurred, leaving a 40-by-40-foot gash in the ship’s port side. The toner cartridges with the explosive PETN in them that were discovered aboard planes in the UK and Dubai last week contained only a small amount, but had they gone off, they would’ve inflicted maximum damage.