"...40 million MRE´s ...per year..."
40 million
But thats just enough to feed ~36.500 soldier per day 3 times.
There are (current) 158.000 American soldiers only in Iraq (without Afghanistan).
So I guess they need a lot of MREs over there. Yes, I know not everybody in Iraq is eating MREs every day, but they don´t need rations with a shelf life of "many years" there!
They need rations to eat (now), not to be stored!
So why using a petrolium (oil) based package, if they find a package that is (maybe?) less expansive, making each MRE cheaper (multiplied with 40 mio!!!!)?! Each single item inside a MRE is packed waterproof etc. also, so why packed them "in plastic" again? Just to make them "air-drop-burst-proof" and deliver them by ship, truck, plane-without-drop?!
"Telling" people is better for the enviroment, sounds good, but helps to saving a lot of (American tax payer´s) money maybe
As the cold war was over in 1990, German Bundeswehr als changed package and shelf life. The "old" square shaped entree (shelf life 20 + years) was replaced by rectangular with a shelf life of 3.5 years (should be used by 2 years). Vacuum packed crackers have been replaced by not-vacuumed packed. Let them became rancid instead of be edible after 20 years a.s.o. EPA outer package is an ordinary card board box, will decompose real quick, burn very well. But they are now eaten in Afghanistan by our troops instead of beeing stored for many years in some shelters...