(OKLAHOMA CITY, Ok. - It`s been 20 years since the deadliest act of homegrown terrorism on U.S. soil, the bombing of the Alfred P. Murrah Federal Building in Oklahoma City.
"This was a place of unspeakable horror and tragedy," said Frank Keating, former Oklahoma Governor.
On April 19, 1995, Timothy McVeigh parked a rental truck packed with explosives outside the federal building. The blast killed 168 people, including 19 children. More than 500 others were injured. McVeigh was executed for the crime in 2001. His accomplice, Terry Nichols, is serving life in prison.
Sunday, dignitaries and family gathered at the Oklahoma City National Memorial, built on the former site of the Murrah building. They remembered those lost and honored the everyday heroes.
FBI Director James Comey said, "In the minutes following the attack, the people of Oklahoma City did something that the rest of us watching from afar found hard to fathom. You ran towards darkness."
That heroism became known as *The Oklahoma Standard*
Former President Bill Clinton said, "For 20 years, you have honored the memories of your loved ones. You have inspired us with the power of your renewal. You have reminded us that we should all live by the Oklahoma standard."