Erfworld 119, page 107

[Lamech]

Um, 1 that wasn't a spell and 2 the airforce was prety dang weak. I don't know what comic you'r reading, but it's not the same as ours.

1) They were Spell defences. Panel 5
2) Umm... strong enough that the fliers were too strong to ambush. So I'm assuming that means the air-force can (or could before being blasted) beat the dwagons in a fight. Otherwise Parson could have hit the airforce, and plop the dwagons on the lake, and laugh.
So... um yeah, I'm reading the comic on the internet how 'bout you guys.