A few modern campaign questions

[Ricky B]

1. An abandoned bridge is removed from the map.
2. I believe it is firepower - minimum range - maximum range, without looking directly.
The other 2 are a result of the way helos were created. Basically a ground unit that ignores most features impacting ground movement, but still like all other ground units in the game. So see mines and draw defensive fire at ground units in hex.

Unforeseen bugs really, in the design.