Rick Defiel idles his car under a streetlight, typing on his laptop as a police scanner crackles in the background.
A strange noise makes him jerk his head upward, away from the glare of his computer screen and into the darkness.
He's alone, protected only by a bullet-resistant vest and pepper spray.
"This is your agent. Are you home?" he asks a former prisoner over the phone.
The reception isn't always welcoming.
"You never know what you're going to find," Defiel said. "It would be nice to have an extra pair of eyes."
Most people convicted of felony offenses in Minnesota are sentenced to probation rather than prison, and there are 5,000 more felons under supervision today than in 2014. But the number of specialized officers who check in on the state's highest-risk offenders has remained stagnant.
Those specialized agents like Defiel work without backup, often at night. They're tasked with making sure ex-cons are observing curfew, passing regular drug and alcohol tests and meeting other terms of their release.