Jurors in Maricopa County Superior Court got the case Monday afternoon and deliberated two hours before finding 40-year-old filmmaker Michael David Turley guilty of endangerment and knowingly giving a false impression in the July 28 mock terrorism scenario at a northwest Phoenix intersection.
Sentencing is set for Aug. 8. Prosecutors said Turley faces penalties ranging from probation to more than five years in prison.
Turley's attorney, Brad Rideout, said he planned to "argue for probation" for his client unless he wants to appeal the verdict.
"We haven't discussed that with him yet," Rideout said. "My client is in shock."
In a YouTube video that Turley made of the hoax, his young relative was dressed in a sheet, had a scarf wrapped around his head, made erratic movements while in a crosswalk and pointed the fake weapon at vehicles, prompting motorists to call 911.
Prosecutor Michael Anderson told jurors in closing arguments Monday that Turley, who was responsible for his nephew's safety that day, could have gotten his young relative killed in the hoax.
Anderson said some motorists who saw the teen with the realistic-looking fake launcher had discussions about whether they should run him over. Still, some recordings of 911 calls also showed that some witnesses assumed the weapon was a fake.
Rideout said callers weren't terrified and instead figured they were witnessing a joke, pointing out that they could see his client filming the hoax and that his nephew did a brief dance while on the street corner.
Earlier in the trial that began June 11, Rideout told jurors that it was foolish for Turley to get his nephew involved but noted that no one was injured and no vehicles wrecked as a result of the hoax.
In testimony last week, Turley said his video of the hoax was meant to be satirical and that most passing motorists laughed at them. He told jurors he didn't think his actions endangered his nephew's life.
In the YouTube video, a narrator identified as Turley said he wanted to see how long it would take authorities to respond to a terrorist situation and mentioned a movie theater shooting two weeks earlier that killed 12 people in Aurora, Colo.
The teenager carried the fake launcher on his shoulder as he made his way across a crosswalk. The narrator said the teen wanted to appear as intimidating as possible in hopes that people would call police.
The video also showed the first police officer to arrive on the scene, finding the 16-year-old standing in his uncle's driveway. The officer calmly told the teenager to put down the weapon and Turley to put down the camera. The officer didn't draw his gun.
Police left without making any arrests, but Turley was taken into custody nearly two months later after officers interviewed people who called emergency services and later saw the video posted on YouTube.