Don't Laugh at Military Graves

So when someone visits Arlington, they're not allowed to talk or laugh?
This past spring when I visited my father's grave (WWII vet Africa, Sicily, Italy) with my sister, we talked and laughed. Just as he would have wanted it.


???Africa, Sicily, Italy,???

Oh please do enlighten Me on this ... Simple observation ...

"my father's grave " ?? no caps on my fathers grave ???

c.d.a.m. tripe me thinks .