Oh, honey, is HE in for a shock! It'll be 90-100 most days with humidity in the 70's and up, and that's without rain!
I imagine the barracks and mess halls have A/C nowadays, but that won't help with early morning PT and moving around camp doing normal duties. But it will certainly get him used to the heat in Kuwait! Tell him good luck, and don't scare the girls in H'burg too much when he goes up there with his fellow soldiers.
When I was in high school, and the National Guard had their guys come through during the summer on their two week annual required training, we called them the Nasty Guards because they'd ride around yelling out from their cars at the girls they'd see walking down the street, or in parking lots. ;o)
Well, he made it through the summer in San Antonio last year (AIT) so I'm sure he'll tough it out.:)