Filed under: Misc. GadgetsWhile some have speculated that a software glitch may been the cause of the deadly anti-aircraft cannon incident in South Africa last week, a defense expert is now casting doubt on that notion, saying that it is more likely the result of a "simple mechanical failure." According to Jim O'Halloran of Jane's Land-Based Air Defence (speaking to NewScientist), "if a shell was jammed in the breech and the cordite then fired, it could set off the ammunition in the canisters," which would in turn send the turret spinning. O'Halloran wen