It began with a flash, a fireball that shattered glass and twisted metal, turning asphalt and nails into missiles that pierced flesh and splintered bone. Then came the shock wave, bursting eardrums, inflicting brain injuries and slamming people to the ground
Large explosions, like the ones detonated in Boston on Monday, have two distinct parts. Both are destructive. Both can be deadly.
Attacks on American soil come in two waves, as well.
First there is the attack itself, which consumes life and limb, crumbles concrete, injects fear, and unites us all through patriotism and compassion.
After the attack, with all of the loss of life, injuries, damage and panic, comes a secondary assault, often with more destructive and enduring consequences.