Very stupid questions for those in the know

[ATAG_Bliss]

For MP, is there a script I can use that deletes damaged static objects over a certain amount of time? (say a AAA that was destroyed, static plane, truck etc.)

In the FMB, what does the NPC checkbox mean and the number you can assign to it?

What does the in game scripts do under AI for emergency car, bus, anti air, (I understand what power on does, but don't fully understand all the rest)?

I've tested and tested and I've finally come to the conclusion that I just flat out need to ask questions lol

Thanks in advance!