[cpdiii]

"An egg sized incendiary device dropped into the fuel tank by a fuel loader could explain the lack of evidence. The fuel acted as a solvent that slowly dissolved a barrier in the incendiary device. Once dissolved, the device would ignite." A shoe bomber standing over the center fuel tank would also do the trick.

[fso301]

A shoe bomber standing over the center fuel tank would also do the trick.

True but there would be residue and tell-tale damage.