I am 100% sure that those meals are not kosher.
Kosher meat? Kosher cheese? No mix or meat and dairy at the same meal? Kosher supervision of the kitchen, supplies and utensils? I bet not...
I have no idea what a true Kosher experience is...but the government version is here.
http://www.bop.gov/foia/certified_food_specifications.pdf
So I looked here for conformation...
https://en.wikipedia.org/wiki/Kosher_foods
It seems that the government makes every effort now to serve a Kosher meal, although it’s obvious they don’t go to extremes.