D Day? Lengthy article on procedure when the Queen passes. Media shutdown for multiple days. "This will be the new code and mark the beginning of the period of mourning. Everything in the process from now on will refer back to D-Day" http://www.drive23.com/history/queens-legacy-fb/?fbclid=IwAR2toW1KliM0CCXHq8Y4Jd79RiBj8baOShxDWIVr3_hJA0ZPammwEn4eBCc