Hey Ralph! I've looked all over and all I can find are these:
They are military issue! 5-Pack pull pin canister. Puts out approximately 70,000-100,000 cubic feet of bright orange smoke in 3-5 minutes.
I figure I can let one of these babies off and you oughta be able to see the wind from COLORADO!! hehe...
Whadda ya think? Overkill?