rio de janeiro back in 2009. black boxes weren't found in that disaster about two years later. is it possible that we'll have that kind of time go by or even longer? >> i think it's possible. the black boxes are going to be transmitting signals but they don't last forever. i think they last for about 30 days. it's mysterious to me -- i'm not an aircraft engineer, but it's mysterious to me that all of the communication systems on the plane, which is relatively new and it's in the digital world with the plane talking to boeing and the airline company athe air traffic controllers, if there was some sort of a mayday that they couldn't take a second and push a button, you know, i don't know. i'd hate to speculate but i guess if i had to speculate, it's some sort of a disaster in midair and in which case you should see a large, large debris