Among the performers set to take the stage are Alfie Boe, Charles Esten, Leona Lewis, Megan Hilty, Cynthia Erivo and conductor Jack Everly and the National Symphony Orchestra. Sinise's Lt. Dan Band will also sing.
The tribute to the U.S. military will air live on PBS at 8 p.m. ET from the West Lawn of the U.S. Capitol. The program will also be broadcast via American Forces Network so the troops who are deployed can watch it.