criminal purposes the crew and the passengers, i think that there are still questions about grund crew, fuelers and others and possibly even stowaways that may have had access to the aircraft before it took off. jon: you say we've learned something and this technology may have been developed from things we learned in the air france 447 crash in 2009. i want to take a look at another recent crash. didn't get a lot of attention in this country because it didn't happen here but it's the crash of united parcel service flight -- i believe it was flight six. this is all that's left of a gigantic boeing 747, 400 series, relatively new aircraft that went down in the united arab emirates back in september of 2010. it was later determined that they had a fire in the cargo hold on the main deck, fire caused probably, authorities said, by lithium ion batteries. we know the malaysian air flight also had lithium ion batteries