I hope no one finds this morbid, but I find myself being intensely curious as to exactly how Reagan's coffin will get inside his tomb. There was no apparent entrance and they cut off the cameras before the actual internment. Other people I watched the service with were also curious about this.
I was wondering the same thing. I have a feeling the slab is like the false floor in a computer room and you can just pull the tiles up to reveal the crypt.