Wow, proximity fused 30mm. Never heard of that, but I've been out for a while and technology has really accelerated in the last 3-4 years.
Thanks for sharing.
And yes, find and fix with a strategic radar platform. It's tough to set up DCA (defensive counter-air) lanes with helicopters; they're slow and most need to refuel on the ground (an argument could be made for using H-60's. Some variants can refuel in the air).
Depending on the threat picture, it could be feasible to set helos up to defend naval assets or use them like Israel has been to defend land-based high-value assets.