in NFPA 921 18.3.2 'High Order Damage'- 'High-order damage is characterized
by shattering of the structure, producing small, pulverized debris. Walls,
roofs, and structural members are splintered or shattered, with the building
completely demolished. Debris is thrown great distances, possibly hundreds of
feet. High-order damage is the result of rapid rates of pressure rise.' World
Trade Centers 1, 2, and 7 all clearly met this definition; therefore they
should have been thoroughly investigated and analyzed for explosives. ...