5-6 objects flying in v formation

On a somewhat windy and foggy night, I saw what appeared to be 5 or 6 objects in a triangle formation out of a small side window of my house, towards the west I think.  I did a double take and really only caught a quick glimpse, but it was dark and foggy and it stood out very oddly to me.  My immediate thought was maybe Canadian geese migrating, as I've seen a lot of them lately, so I ran to the window as soon as I saw it to confirm, and it was already gone.  Whatever it was, it was moving way too fast to be geese, there was no sight of anything by the time I moved to check....there's no way birds could move that fast.
It could have been military planes in flying V formation - that's my only guess.  The Erie Airport isn't very far from here...but it's usually only small private planes that fly into that airport…I don't know what I saw, but it was strange.