The 18th anniversary of the 9/11 terrorists attack; authors Condoleezza Rice and Philip Zelikow (book, "To Build a Better World: Choices to End the Cold War and Create a Global Commonwealth"); Nick Marson, Diane Marson, and Oz Fudge ("You Are Here: A Come From Away Story"); Natasha Bedingfield performs; journalist Meredith Vieira; former professional baseball player Alex Rodriguez;—anonymous