>> there are semple. but i think probably the top two are one, the the rain, the environment. it is dramatically different from what we experienced in iraq. i'm talking now beyond just the marine corps' area of operations. ours for the most part in the south is high dedsert. there are some mountain ranges that start to appear in the northern portions of our sector in the south of afghanistan. the terrain up in r.c. east is incredible. there's nothing in our country you can compare it to. we flew over the rocky mountains from a recent trip to california. it may start to get close, but it does not equate to sheer granite mountains that rise up at 90 degrees to the surface of the earth. and go to 12,000 or 13,000 feet. so it's incredibly rough the rain up there. that's causing us to adapt our tactics and recovery, our medevac capability, those types to have things, as you might anticipate. i think that's probably the first thing. the second thing, i think, is probably just the cultural itself. different language, different tribal affiliations, if you will. the tribes in iraq, i b