Fun for us just happens to be screwing around with anything that gets our attention and is thought-provoking.

We've found that the biggest thing as far as the danger is simply pressure.When we work with explosives, we've got bomb technicians there, bomb-squad guys who go into unknown situations all the time, and they've dealt with it safely.

If at first you don't succeed, C4

The idea that you can contribute is really important, especially for a kid.

Any day we create that much shrapnel is a good day.

There are a lot of things that I'd do differently. But I can't imagine being more fortunate than I have been.

One of the things I'm likely to start building in my shop is a vehicle wherein each wheel has basically a flight-simulator base as its suspension. It's known as a hexapod; it's basically a tripod but each leg is two pistons. So you have six axes of freedom on it. This will be something that can not only do what lowriders do, but shorten or extend its wheelbase and jump forwards, backwards, or from one side to the other. In an off-road situation it could be rolling at speed toward a ravine and then leap across it.