It is a Ducane Forced Air Furnace.
After about 2 hours of troubleshooting by the expert it was determined that the combustion fan was going bad. It was getting hot and cutting off, thus stopping the blower from running and providing heat. Let's hope that we can find a replacement tomorrow.
Thanks for the help.
OK time for the wisecrack - how in the world does the guy from Florida know anything about furnaces...