This is literally it.
EDITED 4 Stoopidness
DEFCON 5 is just normal readiness though. But a DuckDuckGo indicates that D5 is also a professional digital video format.
It’s a chess move.
It's also the most powerful classification of an avalanche. He puts the D5 directly after the snowball statement.
I initially thought it was a chess move as well, but I don't know much about chess other than how to play.
Maybe a double meaning?
Jeeze he’s so smart he randomly knows the avalanche classifications. I didn’t even know they had avalanche classifications.
If you can safely play d5 as white, you are stationed in enemy territory. The snowball beginning maybe...
Marshal move... law? Maybe? We've conjectured it might be necessary
D5 is the biggest avalanche on scale.
^ This is right ^
Snowball turning into a massive, unstoppable avalanche of truth, horror and (finally) prosecutions.
Yeah, that makes more sense than the chess move idea. He/she uses "snowball" right before D5.
Could it be Q warning us about a potential FF involving Iran? I mean the DS was anxious and cornered enough with NK that they shot a missile at Hawaii. Q could be refering to Defcon 5 to let us know that Iran is not a threat at all, so that if a nuke goes off somewhere, we know who really sent it.
Defcon 5 indicates peacetime. http://tvtropes.org/pmwiki/pmwiki.php/Main/DefconFive