A quick note to anyone who is about to play and is reading the comments, it is completely possible to kill your own troops with Farro's flamethrower. I know from experience (R.I.P. Taylor, burnt to a crisp). I don't know of you can with other weapons.
just so you know, unfortunately the AA guns at the edge of the map are completely indestructible, I gathered this through observation and randomly launching my brand new Never Slow jet at the nearest one and trying to tear it to shreds, the health bar didn't go down a single pixel. However I did discover that it is possible to fly straight off the map, however you do take damage every second your'e off-map.