On the morning of April 19th, 1995, a Gulf war vet named Timothy McVeigh woke up in his rented Ryder van where he had spent the night before getting back on the road. Months of planning had gone into his trip to Oklahoma city, but he wasn't moving and he had no intention to stay long.

After his attack scene was absolute chaos and first responders sprung into action, the beginning of a 2 week rescue effort. When it was all said and done 168 Americans had died in the explosion and over 800 more were injured.

Why did he do it? How did he manage such a large attack? And who helped?