dwl@panix.com writes: << come at you from another angle. >> Like getting 20 people to run thru security screening and get lost in the crowd at the 20 largest airports during rush hour at the same time. Each airport then seems to shut down for 3-4-5 hours, cxl all flights and rescreen all passengers. Shuts down the whole air system for the day at least..... and not to tough to do is it? Dennis