It may be true but who wants to credit Snopes? I’m sure other sources than Snopes could verify that fact.
It's not as though I have anything else in the world to do but chase down politically acceptable source references on this thread. I was trying to be helpful in responding to a question. I used Snopes because the search engine indicated it appeared to answer the question. Perhaps you have time answer the question in a more appropriate manner.
I'm pretty sure I have seen videos of the Guard at the Tomb during the hurricane. Maybe search at YouTube?