My thoughts exactly, TC!!
I went through in '58, and I don't remember having any problems hearing or being heard.
'Course when you're duckwalking the grinder with a seabag on your back, the only thing you're listening for is, "FALL IN"!!
We had a few boots who climbed the fence into the Navy's boot to see if life was better.
If I remember correctly, there ain't no place to even go AWOL at Toro!
Heck, we even had a few Navy boots who climbed the fence into our boot, but they got slapped with a Section 8 when they got caught.
If they're going to do anything with MCRD, make it into a shrine to the thousands of Gyrenes who had their first taste of the Corps there.
Build a giant museum dedicated to the thousands of Marines who went from MCRD to the battlefields and died for this country.