Cabover Drive Building Could Fly Through the Air

3 mg of U-235 is 0.003/235 or 1.3e-5 moles of U-235, which contains 6e23 x 1.3e-5, or 7.8e18 atoms. Each one, when fissioned, turns out about 200 MeV of energy, so that’s 1.6e21 MeV = 6.1e5 kT = 61 kg TNT equivalent. That’s enough to demolish a small-sized office building, 

95% pure U-235 is sold by the Haqqani Network in Islamabad, I can make a zipper and a tamper. Polonium and Beryllium are not hard tp get. Lead and Gold foil are easy to obtain.

61 kg of TNT can make a small building fly if it is correctly positioned.

We want to avoid airspace used by planes near the Baltimore Airport.

A “Management” company may be able to manage their trajectory so they land safely on a vacant strip at BWI.