at all if the can avoid it; their loss ratio is way too high. They are putting a lot of effort into keeping the IED attack route alive and well.

Also might consider the value of IEDs planted to disrupt versus those designed just to create noise / confusion versus those designed to specifically attack high value targets with significant PR value. For example, an AAVP with 28 troops versus a HMMWV with 2; an M1 Tank versus a fuel tanker -- even though the tanker is more tactically important than the tank, the tank has a far higher PR value to them.