this is the Army's first real foray into using civil certification, rather than a MILSPEC.
i bet the A/C option wasn't listed as a requirement on the contract negotiated withe Eurocopter. I suspect there well could be other items that crop up. sadly, the Army views A/C as a 'creature comfort,' which is a four-letter word to the brass ("nothing's too good for our soldiers, and that's exactly what they'll get, nothing.")