US$20 billion, for air-conditioning? - what a load of pussies. Our troops don't even have air conditioning at home base let alone on active service. Back in the day, when I was in the RAF, even having a battledress tunic button undone was enough to be put on a charge, for being improperly dressed, no matter what the temperature. Air-conditioning was unheard of, mind you, in the Middle East, we did leave the windows open.
Ken.