A man is found guilty for driving a dump truck into a group of motorcyclists, killing four  and injuring six in March 2010.

Michael Jakscht drove into the bikers while they were stopped at a red light on Carefree Highway near I-17.  The first trial ended in a hung jury.

"These are the last seconds of my life as I knew it up to that point," said Todd Faasee, a victim in the crash.

"Bikes were going up over my head and bikes were going down and bikes were being twisted and bikes were in the middle," said Faasee, describing the scene. "So bikes and people and ... the noise."

What led up to this horrifying moment is the focus of a re-trial for the truck's driver, Michael Jakscht. The State argues Jakscht was impaired, due to the discovery of methamphetamine in his system.

"The defendant was driving a 23,000-pound dump truck, or garbage truck, impaired by meth," said prosecutor Aaron Harder.

Jakscht's defense attorneys did acknowledge the presence of methamphetamine in his system, but made no mention of diet pills as the source as they did in the previous trial.