Honest question: other than AUF, which I'd argue isn't an organic means of putting rounds down range, has HSC (not HS or HC) been called to actually shoot anything? I'd guess yes in the HOA, but I'm also guessing it's about as rare as HSL/M doing it.
Other than a Mk-58 floating in then water near a ship.... No.
The Navy can spend all the money it wants on gucci helo gear, the fact of the matter is, with the exception of 84 and 85, Navy helo units being stationed feet dry is not going to happen very often.
Prior to 9/11 the best Navy helos could get was a Det into Kuwait for a week or so to rebase Terf quals.
The Navy did not want us to be away from our ships for longer than a week and the land components felt that if we were only there for a week or so, they why bother tasking us with any missions/alerts.
For the opening stages of OIF, HS-7 worked a back-door deal with 4ID to get them to request us for MedEvac support when they went into Northern Iraq through Turkey (until, Turkey said No of course). C6F threw a hissy fit about Navy helos supporting Army units ashore and C6F losing control of Navy assets.
That was a legitimate need (due to PaveHawk materiel status for ONW) for the beginning of a war. If the Navy was pushing back on that, you think they are going to buy off on sending aircraft ashore for prolonged periods of time under JFACC/JFLCC control for something less than the invasion of Iraq?
I realize the Air Ambulance got a lot of HS/HSC folks in country for a while, but with the draw down coming in Afghanistan, the odds of the Navy land-basing units for any significant period is incredibly low. If there is a need for CAS aircraft that means there's boots on the ground. That means the Army and Marines will have their own CAS which is under their direct control.
The best the Navy can do it provide a couple of birds under JFACC or JFMCC control.
Sure, we can stand CSAR alerts, but you don't need forward firing ordnance for that mission, that's why we have RESCORT.
If you want to make the case for Navy helos having forward firing ordnance, then we have to base it on a threat to our fleet at sea! That is our job, protecting the fleet.
I've seen too many HS then HSC folks have grand dreams about the 60H then 60S filling the same role as HAL-3 in Viet Nam.
It's not going to happen because the training required to maintain that capability is not feasible based on the current fight and threat. Even more so since the services are far more Joint than during the 60's and 70's; the Navy's riverine forces can call upon Army or USMC aircraft just as easily as USN aircraft if the situation dictates.
So, other than it is some cool flying, why would the Navy invest the money to develop a skill set that is resident in the sister services and contributes little to the Navy's actual fight?