That reminds me of the forwarder who 'forgot' to declare the DGR he put on board of one of our's... He was one of those who did the 'known shipper' courses, so no acceptance check was needed. At destination his packages leaked some unknown stuff (the airport fire brigade's chemical officer did trace it as something corrosive and flameable), which prompted an evacuation of the airplane and the general surroundings. It was then cleaned and the authorities informed, who then informed the loacl authorities of the forwarder (happened to be SIN). These guys revoked his known shipper license and they closed down for uncompetiveness.