Sports after 9/11 and the remaking of the American athlete - ESPN
Beware, sports fans, the terrorists are coming for us
Hundreds — many in full fire gear — climb Werner Park stairs in memory of 9/11 firefighters
Securing Sports Facilities, Post-9/11
Sept. 11 Attack 20th Anniversary: Live Updates: With Bowed Heads, Americans Reflect on 9/11 and Its Aftermath - The New York Times
Gateway Arch, Busch Stadium, Fox Theatre: How going out changed after 9/11
Open Target: Where America Is Vulnerable to Attack: Ervin, Clark Kent: 9781403972880: : Books
Arena Security Reviewed After Paris Terror Attacks - The New York Times
High-tech terror testing keeps game day safe
Stadium security: why terrorism must be kept on the agenda
NFL says 'no known threats against NFL stadiums' in wake of Paris terrorist attacks – New York Daily News
Officials: no Super Bowl threat amid rise of white supremacy