My mom had my dad's, and kept it in a triangular wooden case on the stereo speaker. When she died 11 years later, my brother the Army SSGT got it. What he does with it, I have no idea, but it is probably in the display shrunk in the living room.

A triangular flag just means it's folded properly. A triangular flag in a display case in a window USUALLY means a deceased veteran....but not necessarily.

As far as I know, there are no rules about flying a casket flag, but it will wear out sooner.

There is a "group"---(Boy Scout Troop in Florida????) that collects worn flags and ceremoniously burns them every ??Flag Day??? Can't remember just who it is, thought. Could be Rotary, Elks, Legion, VFW, etc. but I think it is Scouts.