Dodgy Drone Conspiracies: Could They be Sort of True?

Here's my thoughts on the US Drone Conspiracy: IF they  are drones and IF they are searching for radiological material, then who has placed said material on US soil?

Could this be Ukrainian material that looks like Russian material (identical radiological signature because it was made in Russia)?

Because there's no difference in the signature it can then  be blamed on Russia. 

The only question is if they do explode a dirty bomb, or if finding a viable bomb before it is detonated is enough to start the plan.

The plan being to find/detonate the bomb, lock down the country on National Security grounds. Possibly cancel the inauguration of Trump. Expect something to happen over the  New Year celebrations.