Twenty years ago the Oklahoma City bombing seared the concept of terrorism on American soil into our national consciousness and proved that we are all vulnerable, even in the heartland. I was in college at Rice University in 1995. All of us remember exactly where we were that day, and we will never forget the 168 people who were killed. Terrorism is evil, yet the incredible response to tragedies like we experienced in Oklahoma 20 years ago serve to highlight the strength, resolve, and resiliency of the American people to the world.