Before 9/11, there was Oklahoma City.
On April 19, 1995, the United States experienced what was — to that point — the most deadly act of terror ever perpetrated on American soil, when a right-wing extremist detonated a truck bomb next to the Alfred P. Murrah Federal Building in Oklahoma City.
It's been 25 years since 168 people — including 19 children — lost their lives when thousands of pounds of fertilizer, fuel and other chemicals exploded and ripped a gaping hole in the building's facade.
On Sunday, the city's mayor, David Holt, marked the anniversary by saying the way Oklahoma City responded to that tragedy can inform how the nation responds to the coronavirus pandemic.
The Secret Service lost 6 employees in the bombing.