See moving photos from George HW Bush's state funeral, where every living president, foreign leaders, and celebrities paid their respects

Because attendees had to get to the church early, there was plenty of time for socializing.

There were a good amount of across-the-aisle conversations as well, like this one between former CIA Director John Brennan, left, and White House Chief of Staff John Kelly, right.

Just before the ceremony started, President Trump and First Lady Melania took their seats.

They were greeted by the Obamas, who were seated between the Trumps and Clintons.

The first pew of the church was filled with all the living presidents and their wives.

Former President George W. Bush and former First Lady Laura Bush stood outside the cathedral to salute the president's casket as it arrived.