Tonight, the body cam video of a Gulport police officer's DUI arrest while he was out of state for training. Another day, another officer caught doing what they arrest us for. And this time, it's bad. Gatlinburgg police spot an SUV swerving through traffic with its emergency lights on. And when they pull it over, they discover it belongs to another police department. Tonight, we break down the newly released body cam video showing the DUI arrest of Gulfport Police Sergeant Joseph Joe Prine. And trust me, you're going to want to see this. According to officers, the SUV was driving erratically, passing cars, drifting into oncoming traffic, and using its lights like it was an emergency response. But the problem is, there was no emergency, just an offduty sergeant in a city-owned vehicle, allegedly drunk. >> Now, that officer is under both internal and state investigation. Noah Noble reports. That's Gulfport Police Sergeant Joseph's Joe Prine walking into a police station just before 1000 p.m. in Gatlinburg, Tennessee. Prime was in Gatlinburg for out of state training, a FBI leadership class. He's just been arrested for DUI. An hour before the arrest, you can see Prime driving a city-owned unmarked Ford Explorer with blue lights flashing and siren blaring. That's a Gatlinburg police cruiser flipping around to pull him over. >> Hello. >> Hey, buddy. >> So, the reason I'm stopping you >> because the blue light. >> Yeah. >> When officers start looking inside the SUV, they find something that makes every police department shutter. One of the officers asks, "You just ride around with beer cans in your government vehicle?" And Sergeant Prime answers, "Honestly, those were from yesterday." Another Gatlinburgg police officer on the passenger side spots open beer cans. >> You just ride around with beer cans in the vehicle and a government an agency vehicle or >> brother. We honestly >> but these officers don't buy that story. >> Has he been drinking? >> Oh yeah. >> And when Prime is asked to step out >> he admits to drinking. How much have you had to drink? >> A couple beers at Jason Alans. >> How much would a couple be? >> Next comes the field sobriety test and Pride admits he's been drinking. First he says he had three or four beers and then changes it to two or three, which let's be real is the cop version of I only had one. He sways, he stumbles, and eventually he refuses the roadside breathalyzer. But later at the station, he agrees to a blood draw. >> Prime goes through field sobriety tests, including heel to toe and a balancing test. >> You said you've had at least three or four beers. >> Two to three. Yes, sir. >> Okay. Like I said, weing around hitting the siren in the lights. That's all it is. Okay. >> Apparently, he did not pass. >> All right, man. If you go, put your hands behind your back for me. I got >> officers search Prime's unmarked cruiser. Assuming that's his. >> Yeah. Was it Gulport? >> Yeah, Sergeant. You should know better. >> And that one sentence says it all because police know the rules better than anyone. They just don't always follow them. >> Then Prime has read his rights. >> You have the right to remain silent. Anything you say can be used against you in the court of law. >> Prime refuses to give a breath sample at the scene. But in the state of Tennessee, if you refuse, your license gets suspended. >> You're asking for a blood sample? >> Yes, sir. >> If I'm consenting to a blood s? >> Yes, sir. >> Prime decided to consent. Gatlinburg PD sent the sample to be tested and Prime was charged with three misdemeanors. Driving while under the influence, open display of alcohol, and possession of a gun while intoxicated. Gulfport Police Department said Prime is now on leave and under internal investigation. The Mississippi Board of Law Enforcement Officer Standards confirmed it too is investigating this incident. Gulfport PD has placed Prime on personal leave while they investigate and Tennessee's law enforcement oversight board is reviewing the incident, too. Here's the real issue. If this were you or me, we'd be in cuffs, locked up, license gone, job gone instantly. But for officers, there's always a process, a review. Uh, let's wait and see. So, the question is, should officers face harsher penalties when they break the laws they enforce? Let me know in the comments.