Buckingham Palace said Prince Philip, husband of Queen Elizabeth II, has died aged 99 today. In this May 9, 2012 file photo, Britain's Queen Elizabeth II sits next to Prince Philip in the House of Lords as she waits to read the Queen's Speech to lawmakers in London. (AP Photo)
An announcement regarding the death of Britain's Prince Philip is displayed on the fence of Buckingham Palace in London, Friday, April 9, 2021. (AP Photo)
People gather outside the gates of Buckingham Palace in London after the announcement regarding the death of Britain's Prince Philip, Friday, April 9, 2021. (AP Photo)
In this June, 16, 2011 file photo Britain's Queen Elizabeth II with Prince Philip arrive by horse drawn carriage in the parade ring on the third day, traditionally known as Ladies Day, of the Royal Ascot horse race meeting at Ascot, England. (AP Photo)
A June 3, 2012 photo from files showing Britain's Queen Elizabeth II, and her husband Prince Philip watching the proceedings from the royal barge during the Diamond Jubilee Pageant on the River Thames in London. (AP Photo)
In this June 8, 2015 file photo, Prince Philip unveils a plaque at the end of his visit to Richmond Adult Community College in Richmond, south west London. (AP Photo)
In this May 17, 1989 file photo, Prince Philip talks with former US President Ronald Reagan, right, and his wife Nancy Reagan prior to a dinner in Beverly Hills, Calif. The Prince presented the Winston Churchill Award to the former president. (AP Photo)
In this June 2, 1953 file photo, Britain's Queen Elizabeth II and her husband, the Duke of Edinburgh, wave from the balcony of Buckingham Palace, London, following the Queen's coronation at Westminster Abbey. (AP Photo)
In this Oct. 15, 1977 file photo, Britain's Queen Elizabeth II and Prince Philip wave to young people at Nassau's Clifford Park after their arrival in Nassau, Bahamas. (AP Photo)
In this June 15, 1998 file photo, Britain's Queen Elizabeth II and her husband Prince Philip, right, lead the annual procession of members of the Order of the Garter from Windsor Castle to St. George's Chapel in Windsor, England. (AP Photo)
In this Nov. 20, 1947 file photo, Princess Elizabeth and her husband the Duke of Edinburgh pose with royal guests after their wedding, at Buckingham Palace in London, England. (AP Photo)
In this Aug. 1951 file photo, Princess Elizabeth stands with her husband the Duke of Edinburgh and their children Prince Charles and Princess Anne at the couple's London residence at Clarence House. (AP Photo)
In this June 29, 2011 file photo, Britain's Queen Elizabeth II, bottom center, and Prince Philip, flanking her at left, face towards guests during the annual summer garden party held at Buckingham Palace in London. (AP Photo)
In this Aug. 2, 2017 file photo, Britain's Prince Philip, in his role as Captain General of the Royal Marines, talks to troops as he attends a Parade on the forecourt of Buckingham Palace, in central London. The 96-year-old husband of Britain's Queen Elizabeth II, Prince Philip made his final solo appearance to mark the finale of the Royal Marines Charity, 1664 Global Challenge. (AP Photo)
In this July 31, 1947 file photo, Lieut. Philip Mountbatten, as he was then called, center, inspects his men at the Petty Officers' Training Center at Corsham, England. (AP Photo)