Metal + asphalt = sparks
fuel + sparks = fire
fire = bad
     Ok, just how many gear up landings have you witnessed?  Getting a little tired of people
acting like I'm some sort of moron.  Aluminum rarely sparks, and in all the gearups I've
witnessed, not one caught fire.
     In fact I've worked on a flightline for over 25 years, military and civilian.  In that time I've
witnessed 2 fires..an F-4 engine fire and a CL-601 brake fire from a high speed taxi test.  The
Phantom caught fire while airborne and the Challenger's left main gear brake seized.