Sunday: CIA Director John Brennan, Rep. Devin Nunes

Sam Pulia, mayor of Westerchester, Ill., and a former police officer, salutes the name of his cousin, New York firefighter Thomas Anthony Casoria, who was killed in the South Tower, prior to memorial observances held at the site of Ground Zero in New York on September 11, 2014.

Andrew Burton/Getty Images

This Sunday marks the 15th Anniversary of the 9/11 terror attacks.  9/11 catapulted terrorism to the forefront of U.S. national security concerns, 15 years after the War on Terror began, are we safer?  What are the biggest threats we face today – and what should we be most concerned about in the future?  Also, how is the issue of national security playing on the campaign trail.

We’ll talk to CIA Director John Brennan about recent terror and intelligence threats, including cyber-attacks on our political system and the current state of the fight against ISIS.

We’ll continue the conversation on terror with Chairman of the House Select Committee on Intelligence, Rep. Devin Nunes (R-CA), who told us a year ago, “we face the highest threat level we have ever faced in this country today.” We’ll ask Rep. Nunes where that threat level stands today.

We’ll also discuss how the candidates are faring on national security issues in the battleground states.   CBS News Elections Director Anthony Salvanto will be in studio to break down the numbers in new Battleground Tracker polls from Ohio, Florida and the other 11 battleground states.

We’ll have plenty of analysis a national security panel with The Atlantic’s Jeffrey Goldberg, CBS Senior National Security Analyst and Former Homeland Security Adviser Fran Townsend and author Steven Brill, whose yearlong study on the terrorism threats facing the U.S. was published last month in The Atlantic. We’ll talk to these experts about new threats facing the U.S. and ask them how safe we really are after 9/11.

As always we’ll break down the week in politics with our political panel. We’ll talk to Wall Street Journal’s Peggy Noonan, The New York Times’ Mark Leibovich, Slate’s Jamelle Bouie and The Cook Political Report’s Amy Walter.

We’re less than 60 days away from Election Day and you won’t want to miss this packed show! Check your local listings for airtimes. And if you miss us, catch the rebroadcast on our digital network CBSN on cbsnews.com at 11am ET and 6pm ET. Face the Nation is also now available through On Demand.