As always, sounds fun until someone does something stupid with it. Someone will hear the boom and call the police and then they have to make a decision on what to do.
[28-1213 (a) (I)
(7)(a) Destructive devices means:
(i) Any explosive, incendiary, chemical or biological poison, or poison gas (A) bomb, (B) grenade, (C) rocket having a propellant charge of more than four ounces, (D) missile having an explosive or incendiary charge of more than one-quarter ounce, (E) mine, (F) booby trap, (G) Molotov cocktail, (H) bottle bomb, (I) vessel or container intentionally caused to rupture or mechanically explode by expanding pressure from any gas, acid, dry ice, or other chemical mixture, or (J) any similar device, the primary or common purpose of which is to explode and to be used as a weapon against any person or property; or
(ii) Any combination of parts either designed or intended for use in converting any device into a destructive device as defined in subdivision (7)(a)(i) of this section from which a destructive device may be readily assembled.
(b) The term destructive device does not include (i) any device which is neither designed nor redesigned for use as a weapon to be used against person or property, (ii) any device, although originally designed for use as a weapon, which is redesigned for use as a signaling, pyrotechnic, line-throwing, safety, or similar device, (iii) surplus ordnance sold, loaned, or given by the Secretary of the Army pursuant to 10 U.S.C. 4684(2), 4685, or 4686, as such sections existed on March 7, 2006, (iv) any other device which the Nebraska State Patrol finds is not likely to be used as a weapon or is an antique, or (v) any other device possessed under circumstances negating an intent that the device be used as a weapon against any person or property;]
And like tannerite, the State Patrol will have to do something to "Protect the public". The second section should have protected tannerite, but with Administrative duties, the State Patrol can change the designation.