Lew, Basic terms should be gone over. Meteor,meteoroid, meteorite, fireball, train, etc. A good talk on the appearance of fireballs and their true geometry in the atmosphere would be very useful. Almost no one knows how far away these things really are; a hefty percentage of UFO reports are obvious meteors. Horizon approachers fool 99.999% of the public. Go over the visibility of the best major showers also. Norman