The dangers of code reuse illustrated, from Intelligent Enterprise: Eager to demonstrate their flying skills for some visiting American pilots, the hotshot Aussies ‘buzzed’ the virtual kangaroos in low flight during a simulation. The kangaroos scattered, as predicted, and the visiting Americans nodded appreciatively … then did a double-take as the kangaroos reappeared from behind a hill and launched a barrage of Stinger missiles at the hapless helicopter.