Leaving because despite the capability to rescue someone and semi regular practice of doing so at 10,000 feet, the Navy doesn't value this skill set. I guess it make sense because helos are clearly meant for other purposes like delivering hellfires and APKWS.
I might be off here, but if you're pulling people from tough-spots at 10k you're probably flying around the North Cascades? If that's true, I don't care what "the Navy" thinks, but there's a lot folks who think those guys have low hanging brass balls.