[The Comedian]

This makes me wonder:

How successful would the Obama Regime be in disguising a false flag attack on a US city as an asteroid impact?

How hard would it then be to move everyone into "Asteroid-free zones", personally protected by the Asteroid Czar?

It just goes on and on.

Frowning takes 68 muscles.
Smiling takes 6.
Pulling this trigger takes 2.
I'm lazy.

[I Shall Endure]

Nuclear explosions leave readily measurable radioactive by-products. Unless the survivors had only pre-20th century technology, a nuclear explosion would be identified as such.