Oh, I think ballistics are pretty easy to program. Its just a little math. Been playing a lot of Arma 2 / Ace 2 mod of late though. Arma 2 itself is just a bad looking Crysis, but ACE takes it into simulation territory! Very impressed with them. The ACE mod brings in realistic sights, like mil-dot scopes and real ACOG reticles, and generally tries to make everything realistic. Just got through learning how to sight in the M119 Howitzer. Drove me crazy trying to get it right. Pretty neat hitting something within a few feet at 8 MILES AWAY! I'm waiting for them to get a real 82mm mortar system now as well. If they could stick this into a CE2 world, it would be AWESOME.