This made me cry – just as it did when the Queen’s guard played it in 2001 at Buckingham Palace.

In a break from traditional protocol, Queen Elizabeth II of Great Britain ordered the change to the daily ceremonial parade to show solidarity with the United States in the wake of the 9-11 attacks. Prince Andrew, representing his mother, was joined by the US ambassador to Britain, William Farish, for the 45-minute ceremony.

As the band of the Coldstream Guards began the US national anthem hundreds in the crowd sang along while others wept, before observing a two-minute silence.

An incredible moment for both nations.

2001: I can imagine the comfort this brought to American who were stuck in London, and unable to return home.