Trump was then set to pay a visit to the crypt of St. George’s Chapel, where Queen Elizabeth II is buried, to lay a wreath.

He will also have the opportunity to tour the chapel, constructed in 1475 during Edward IV’s reign and completed under Henry VIII. This chapel serves as a worship site for the royal family and houses the remains of monarchs such as George VI, the Queen Mother, and Princess Margaret.

In an unprecedented event for a visiting world leader, a gathering of 200 musicians will carry out a “Beating Retreat,” a musical military ceremony with origins in the 17th century.

The spectacle, observed by U.K. and U.S. military personnel along with their families, will conclude with a coordinated flyover at Windsor Castle’s East Lawn. This display will feature two F-35 jets from the Royal Air Force alongside two jets from the 493rd Fighter Squadron of the U.S. Air Force.

The F-35s will be followed by nine Hawk T1 jets of the Royal Air Force Aerobatics Team, better known as the Red Arrows.

Outside Windsor’s walls, the picture was not so welcoming.