Checks, I'm pretty familiar with SLOP and the MNPS. It wasn't route abort, IFE, or weather avoidance. It had to do with overtaking on the NAT. I picked none of the above, but don't know for sure that it was right. Now that I think about it, it was multiple NAT questions not multiple SLOP questions. The other NAT question I remember had to do with radio procedures (sorry, it was a week ago and I might have had a couple drinks prior to my original post).