Ships can move before Defon 3, so why not planes?

[PSBirch]

Okay, the obvious answer is to keep people from scouting deep into the enemy interior, but how about within one's own territory / international waters? I spend a decent amount of time at the beginning of DefCon 3 ferrying bombers and fighters back and forth to where I'll get the most use out of them -- it would be nice if i could do some of this earlier, when the tactical repercussions are less.

[Radiant Caligula]

IMO that would completely alter the balance. With preDefcon3 planes you wouldn't have to place as strategically and it would cancel out the need for the Defcon stages.

Why not make it possible to nuke in defcon 2 and search for subs in def 4 while you're at it?