Last time I played I had a really hard time getting a boomalope for chemfuel, so this time I used the Prepare Carefully mod to spend points to start with a boomalope. I named her Betty.
I get a crashing shuttle quest, I decide to let them crash land in my territory (seems odd I'd think they wouldn't have a whole season worth of time to ask people if they can land but whatever.) since they are offering me some royal favor and I'll just have to fight off some tribals with heavy soldier support from the empire and protect the civilian passengers. Won't be a challenge. Easy favor.
They crashlanded within my walls, woot!
On top of Betty, Oof.
Who was near my mortars and a few shells, boom.
Fortunately the civilians were still in their escape pods when the blast hit, only suffering minor burns from some random fires, either from the pancaked boomalope or the incendiary shells. But 2 of the bodyguards were killed instantly, as was an innocent alpaca and a massive hole was punched in my base's perimeter wall, all the mortars were wasted, and the shuttle itself was vaporized.
I did still manage to fight off the tribals though, and all the civilians were extracted in one piece. But now I'm down to 1/3rd my stock of mortar shells, and no boomalope for chemfuel to make more.
Rimworld