The hearse, a specially modified Land Rover, carrying the coffin of Britain's Prince Philip, husband of Queen Elizabeth, who died at the age of 99, is seen outside St George's Chapel on the grounds of Windsor Castle in Windsor, Britain, April 17, 2021. Steve Parsons/Pool via REUTERS

The hearse, a specially modified Land Rover, carrying the coffin of Britain's Prince Philip, husband of Queen Elizabeth, who died at the age of 99, is seen outside St George's Chapel on the grounds of Windsor Castle in Windsor, Britain, April 17, 2021. Steve Parsons/Pool via REUTERS

Members of the Royal Family follow the coffin of Britain's Prince Philip, husband of Queen Elizabeth, who died at the age of 99, as they enter at Saint George's Chapel for his funeral service, in Windsor, Britain, April 17, 2021. Danny Lawson/Pool via REUTERS

The coffin of Britain's Prince Philip, husband of Queen Elizabeth, who died at the age of 99, is carried into St George's Chapel for his funeral service, in Windsor, Britain, April 17, 2021. Barnaby Fowler/Pool via REUTERS

Members of the Royal Family follow the coffin of Britain's Prince Philip, husband of Queen Elizabeth, who died at the age of 99, as they enter at Saint George's Chapel for his funeral service, in Windsor, Britain, April 17, 2021. Danny Lawson/Pool via REUTERS

Members of the Royal Family follow the coffin of Britain's Prince Philip, husband of Queen Elizabeth, who died at the age of 99, as they enter at Saint George's Chapel for his funeral service, in Windsor, Britain, April 17, 2021. Danny Lawson/Pool via REUTERS

Members of the Royal Family stand behind the coffin of Britain's Prince Philip, husband of Queen Elizabeth, who died at the age of 99, during his funeral at St George's Chapel, in Windsor, Britain, April 17, 2021. Yui Mok/Pool via REUTERS

The coffin of Britain's Prince Philip, husband of Queen Elizabeth, who died at the age of 99, is carried on a specially modified Land Rover to St George's Chapel, during his funeral in Windsor, Britain, April 17, 2021. Danny Lawson/Pool via REUTERS

Members of the Royal Family stand behind the coffin of Britain's Prince Philip, husband of Queen Elizabeth, who died at the age of 99, during his funeral at St George's Chapel, in Windsor, Britain, April 17, 2021. Yui Mok/Pool via REUTERS

Britain's Queen Elizabeth II watches as the coffin of Britain's Prince Philip is placed inside St George's Chapel, Windsor Castle, Berkshire during his funeral service, in Windsor, Britain, April 17, 2021. Jonathan Brady/Pool via REUTERS

Pall Bearers carry the coffin of Britain's Prince Philip, husband of Queen Elizabeth, followed by members of the Royal family entering St George's Chapel, Windsor Castle in Windsor, Britain, April 17, 2021. Danny Lawson/Pool via REUTERS

Britain's Prince Charles follows the hearse, a specially modified Land Rover, carrying the coffin of Britain's Prince Philip, husband of Queen Elizabeth, who died at the age of 99, on the grounds of Windsor Castle in Windsor, Britain, April 17, 2021. Steve Parsons/Pool via REUTERS

Britain's Prince Charles follows the hearse, a specially modified Land Rover, carrying the coffin of Britain's Prince Philip, husband of Queen Elizabeth, who died at the age of 99, on the grounds of Windsor Castle in Windsor, Britain, April 17, 2021. Steve Parsons/Pool via REUTERS

Members of the Royal Family follow the coffin of Britain's Prince Philip, husband of Queen Elizabeth, who died at the age of 99, as they enter at Saint George's Chapel for his funeral service, in Windsor, Britain, April 17, 2021. Danny Lawson/Pool via REUTERS

Pall Bearers carry the coffin of Britain's Prince Philip, husband of Queen Elizabeth, who died at the age of 99, followed by members of the royal family entering St George's Chapel, in Windsor, Britain, April 17, 2021. Danny Lawson/Pool via REUTERS

Pall Bearers carry the coffin of Britain's Prince Philip, husband of Queen Elizabeth, who died at the age of 99, followed by members of the royal family, at St George's Chapel, in Windsor, Britain, April 17, 2021. Danny Lawson/Pool via REUTERS

Britain's Queen Elizabeth II watches as pallbearers carry the coffin of the Britain's Prince Philip during his funeral at St George's Chapel, Windsor Castle, in Windsor, Britain, April 17, 2021. Dominic Lipinski/Pool via REUTERS

Britain's Queen Elizabeth II watches as pallbearers carry the coffin of the Britain's Prince Philip during his funeral at St George's Chapel, Windsor Castle, in Windsor, Britain, April 17, 2021. Dominic Lipinski/Pool via REUTERS

The coffin of Britain's Prince Philip, husband of Queen Elizabeth, who died at the age of 99, arrives at St. George's Chapel for a funeral service, in Windsor, Britain, April 17, 2021. Arthur Edwards/Pool via REUTERS

The coffin of Britain's Prince Philip, husband of Queen Elizabeth, who died at the age of 99, arrives at St. George's Chapel for a funeral service, in Windsor, Britain, April 17, 2021. Arthur Edwards/Pool via REUTERS

The coffin of Britain's Prince Philip, husband of Queen Elizabeth, who died at the age of 99, arrives at St. George's Chapel for a funeral service, in Windsor, Britain, April 17, 2021. Arthur Edwards/Pool via REUTERS

The coffin of Britain's Prince Philip, husband of Queen Elizabeth, who died at the age of 99, is carried into St George's Chapel for his funeral service, in Windsor, Britain, April 17, 2021. Barnaby Fowler/Pool via REUTERS

Britain's Queen Elizabeth II watches as pallbearers carry the coffin of the Britain's Prince Philip during his funeral at St George's Chapel, Windsor Castle, in Windsor, Britain, April 17, 2021. Dominic Lipinski/Pool via REUTERS

Britain's Queen Elizabeth II watches as the coffin of the Britain's Prince Philip is placed inside St George's Chapel, Windsor Castle, Berkshire during his funeral service, in Windsor, Britain, April 17, 2021. Jonathan Brady/Pool via REUTERS

Britain's Queen Elizabeth II watches as the coffin of the Britain's Prince Philip is placed inside St George's Chapel, Windsor Castle, Berkshire during his funeral service, in Windsor, Britain, April 17, 2021. Dominic Lipinski/Pool via REUTERS

Britain's Queen Elizabeth II watches as the coffin of the Britain's Prince Philip is placed inside St George's Chapel, Windsor Castle, Berkshire during his funeral service, in Windsor, Britain, April 17, 2021. Jonathan Brady/Pool via REUTERS

The coffin of Britain's Prince Philip is seen during his funeral service at St George's Chapel, Windsor Castle, Britain, April 17, 2021. Barnaby Fowler/Pool via REUTERS

The coffin of Britain's Prince Philip, is carried into The Quire during his funeral service at St George's Chapel, Windsor Castle, Britain, April 17, 2021. Barnaby Fowler/Pool via REUTERS

The coffin of Britain's Prince Philip, husband of Queen Elizabeth, who died at the age of 99, is carried into The Quire during his funeral service at St George's Chapel, in Windsor, Britain, April 17, 2021. Barnaby Fowler/Pool via REUTERS

The coffin of Britain's Prince Philip, husband of Queen Elizabeth, who died at the age of 99, is carried into The Quire during his funeral service at St George's Chapel, in Windsor, Britain, April 17, 2021. Barnaby Fowler/Pool via REUTERS

Britain's Prince Harry follows the coffin of Britain's Prince Philip, as it passes through the Parade Ground, during his funeral at Windsor Castle, Britain, April 17, 2021. Gareth Fuller/Pool via REUTERS

Britain's Prince Charles, Britain's Prince Edward and Britain's Prince Harry follow the coffin of Britain's Prince Philip, as it passes through the Parade Ground, during his funeral at Windsor Castle, Britain, April 17, 2021. Gareth Fuller/Pool via REUTERS

Britain's Prince William and Britain's Prince Harry follow the coffin of Britain's Prince Philip, as it passes through the Parade Ground, during his funeral at Windsor Castle, Britain, April 17, 2021. Gareth Fuller/Pool via REUTERS

Pall Bearers carrying the coffin of Britain's Prince Philip, husband of Queen Elizabeth, followed by the Britain's Prince Charles, Britain's Princess Anne and then members of the Royal family, entering St George's Chapel, Windsor Castle in Windsor, Britain, April 17, 2021. Danny Lawson/Pool via REUTERS

The coffin of Britain's Prince Philip, husband of Queen Elizabeth, who died at the age of 99, is taken into St. George's Chapel for a funeral service, in Windsor, Britain, April 17, 2021. Justin Tallis/Pool via REUTERS

Military members carry the coffin of Britain's Prince Philip, husband of Queen Elizabeth, who died at the age of 99, during his funeral in Windsor, Britain, April 17, 2021. Adrian Dennis/Pool via REUTERS

The coffin of Britain's Prince Philip, husband of Queen Elizabeth, who died at the age of 99, is taken into St. George's Chapel for a funeral service, in Windsor, Britain, April 17, 2021. Justin Tallis/Pool via REUTERS

The coffin of Britain's Prince Philip, husband of Queen Elizabeth, who died at the age of 99, is seen on the hearse, a specially modified Land Rover, during his funeral, on the grounds of Windsor Castle in Windsor, Britain, April 17, 2021. Adrian Dennis/Pool via REUTERS

The coffin of Britain's Prince Philip, husband of Queen Elizabeth, who died at the age of 99, is taken into St. George's Chapel for a funeral service, in Windsor, Britain, April 17, 2021. Richard Pohle/Pool via REUTERS

Britain's Prince Philip's coffin, covered with his personal standard on the Land Rover Defender he helped to design, passes through the Parade Ground, during his funeral at Windsor Castle, in Windsor, Britain, April 17, 2021. Gareth Fuller/Pool via REUTERS

A sword and cap on the coffin of Britain's Prince Philip during his funeral at St George's Chapel, at Windsor Castle in Windsor, Britain, April 17, 2021. Dominic Lipinski/Pool via REUTERS

Britain's Prince Philip's coffin, covered with his personal standard on the Land Rover Defender he helped to design, passes through the Parade Ground, during his funeral at Windsor Castle, in Windsor, Britain, April 17, 2021. Gareth Fuller/Pool via REUTERS

Britain's Queen Elizabeth II watches as the coffin of the Britain's Prince Philip is carried into St George's Chapel, Windsor Castle, Berkshire during his funeral service, in Windsor, Britain, April 17, 2021. Yui Mok/Pool via REUTERS

A view shows the coffin of Britain's Prince Philip, husband of Queen Elizabeth, who died at the age of 99, at St. George's Chapel, in Windsor, Britain, April 17, 2021. Dominic Lipinski/Pool via REUTERS?

Britain's Queen Elizabeth II watches as pallbearers carry the coffin of Britain's Prince Philip, who died at the age of 99, at St. George's Chapel, in Windsor, Britain, April 17, 2021. Dominic Lipinski/Pool via REUTERS?

The coffin of Britain's Prince Philip is placed in a specially modified Land Rover, during the funeral of Britain's Prince Philip, husband of Queen Elizabeth, who died at the age of 99, on the grounds of Windsor Castle in Windsor, Britain, April 17, 2021. Adrian Dennis/Pool via REUTERS

The coffin of Britain's Prince Philip, husband of Queen Elizabeth, who died at the age of 99, is taken into St. George's Chapel for a funeral service, in Windsor, Britain, April 17, 2021. Richard Pohle/Pool via REUTERS

The coffin of Britain's Prince Philip, husband of Queen Elizabeth, who died at the age of 99, is taken into St. George's Chapel for a funeral service, in Windsor, Britain, April 17, 2021. Richard Pohle/Pool via REUTERS

Britain's Camilla, Duchess of Cornwall waits for the arrival of the coffin of Britain's Prince Philip, husband of Queen Elizabeth, during his funeral service at St George's Chapel, in Windsor Castle, Windsor, Britain, April 17, 2021. Danny Lawson/Pool via REUTERS

Britain's Catherine, Duchess of Cambridge watches as pallbearers carry the coffin of Britain's Prince Philip, husband of Queen Elizabeth, who died at the age of 99, during his funeral at St George's Chapel, in Windsor Castle, in Windsor, Britain, April 17, 2021. Dominic Lipinski/Pool via REUTERS

Britain's Prince Charles and Princess Anne follow the Land Rover Defender carrying Britain's Prince Philip's coffin during his funeral at Windsor Castle in Windsor, Britain, April 17, 2021. Aaron Chown/Pool via REUTERS

The coffin of Britain's Prince Philip, husband of Queen Elizabeth, who died at the age of 99, is taken into St. George's Chapel for a funeral service, in Windsor, Britain, April 17, 2021. Arthur Edwards/Pool via REUTERS

The coffin of Britain's Prince Philip, husband of Queen Elizabeth, who died at the age of 99, is taken into St. George's Chapel for a funeral service, in Windsor, Britain, April 17, 2021. Arthur Edwards/Pool via REUTERS

The coffin of Britain's Prince Philip, husband of Queen Elizabeth, who died at the age of 99, is taken into St. George's Chapel for a funeral service, in Windsor, Britain, April 17, 2021. Kirsty Wigglesworth/Pool via REUTERS

The coffin of Britain's Prince Philip, husband of Queen Elizabeth, who died at the age of 99, is taken into St. George's Chapel for a funeral service, in Windsor, Britain, April 17, 2021. Kirsty Wigglesworth/Pool via REUTERS

Britain's Prince Charles and Princess Anne follow the Land Rover Defender carrying Britain's Prince Philip's coffin during his funeral at Windsor Castle in Windsor, Britain, April 17, 2021. Aaron Chown/Pool via REUTERS

Pall Bearers carrying the coffin into the Chapel during the funeral of Britain's Prince Philip, husband of Queen Elizabeth, in Windsor Castle in Windsor, Britain, April 17, 2021. Danny Lawson/Pool via REUTERS

Members of the military carry the coffin of Britain's Prince Philip, husband of Queen Elizabeth, who died at the age of 99, on the grounds of Windsor Castle, during his funeral in Windsor, Britain, April 17, 2021. Chris Jackson/Pool via REUTERS

Britain's Prince William and Britain's Prince Harry follow the coffin of Britain's Prince Philip, as it passes through the Parade Ground, during his funeral at Windsor Castle, Britain, April 17, 2021. Gareth Fuller/Pool via REUTERS

The coffin of Britain's Prince Philip, husband of Queen Elizabeth, who died at the age of 99, is taken into St. George's Chapel for a funeral service, in Windsor, Britain, April 17, 2021. Justin Tallis/Pool via REUTERS