[quote]The document says the bombs should have detonated — parachutes were deployed and triggers were armed, but one low-voltage switch failed to activate as it should have, preventing what would have been devastating and widespread damage.[/quote] This is crap. It didn't fail...it worked perfectly. Yes, there are numerous safing devices on bombs, but most have to do with its travel so that it doesn't detonate in storage or in-transit. These sequences includes arming only after an elapsed time from launch of the plane, after the weapon travels a certain distance, after a specific change in pressure occurs (to ensure proper height of deployment), and after experiencing a specific acceleration or deceleration. Most weapons use several types of fuzes to ensure correct detonation. In this case, the drop conditions were close enough to the programmed conditions for the test that every other safing mechanism released, but the final one prevented arming. The document does not say the last mechanism failed...it actually says it was the only effective mechanism on the device. So more hype and nonsense from what could have been a really interesting article.