"Fox News Reporting: D-Day +70 Secrets Revealed" (7 p.m., FNC; 10 p.m. ET): Seventy years after the great Allied victory, Greta Van Susteren hosts a special that reveals the secrets behind the Invasion of Normandy and the plan the British concocted to trick Adolph Hitler about the time and place of D-Day.
National Memorial Day Concert (8 p.m., PBS): Gary Sinise and Joe Mantegna return to host the annual tribute to service members and veterans. Airing from the West Lawn of the Capitol, the event features performances by "The Voice" winner Danielle Bradbery and "Smash" alum Megan Hilty.
"The Normal Heart" (9 p.m., HBO): An A-list cast, including Mark Ruffalo and Julia Roberts, shine in this powerful adaptation of Larry Kramer's incendiary play about the early days of the AIDS crisis. Directed by Ryan Murphy ("Glee"), the film takes an unflinching look at America's sexual politics as gay activists and their allies in the medical community fight to expose the truth about the burgeoning epidemic to a city and nation in denial. Matt Bomer, Taylor Kitsch and Jim Parsons also star.
"Mad Men" (10 p.m., AMC): The first half of the final season of comes to a close tonight. Let's hope Don (Jon Hamm) can keep behaving himself and that Peggy (Elisabeth Moss) finally emerges from her funk.
Also on Sunday: