Saturday, March 9 at 11 p.m. ET and Sunday, March 10 at 4 a.m. ET

Terror is an insidious weapon. Those who use it not only cause death and destruction, they challenge the very essence of our lives...our freedom from fear. 

As the days have turned into weeks and weeks have turned into months since the September 11 terror attacks on the World Trade Center and the Pentagon, Americans have begun to feel secure again.

Our special is here to remind all of us why we are waging a war against terror.

• Correspondent Eric Shawn looks back to that fateful day nearly six months ago in interviews with former New York City Police Commissioner Bernard Kerik and New York State Head of Security Robert Kallstrom.

• Correspondent Linda Vester brings us an exclusive interview with two Army Rangers who were involved in one of the first anti-terrorist missions of Operation Enduring Freedom in Afghanistan.

• Correspondent Catherine Herridge brings us an update on the search for terrorists in America.

Finally, don't miss our commemorative tributes to some of the men and women who survived the terror attacks and some who, tragically, did not.

Please join us for Why We Fight: Terrorism this Saturday and Sunday only on the Fox News Channel.