[¶ 1.] After being arrested and charged with driving under the influence, defendant moved to suppress the evidence. The circuit court denied defendant’s motion, concluding that an exception to the warrant requirement applied because the officer acted in his function as a community caretaker. We affirm.

Background

[¶ 2.] At approximately 1:00 a.m. on January 21, 2015, Officer Marci Gebers observed a vehicle parked on the 400 block of Third Street in downtown Brookings, South Dakota. The vehicle was running, and Officer Gebers observed a man in the driver’s seat, later identified as Nicholas Eleven. Officer Gebers testified that she believed the occupant was either looking at his mobile phone or waiting for someone. Officer Gebers explained that she did not approach the vehicle to make any further observations.

[¶ 3.] At approximately 1:40 a.m., Officer Adam Smith drove past the same vehicle previously observed by Officer Gebers. Like Officer Gebers, Officer Smith observed thát the vehicle was running and there was a man in the driver’s seat. Officer Smith believed the occupant may have been looking at his mobile phone. Officer Smith drove past Eleven’s vehicle, noted the license plate number, and requested a license plate check. Officer Gebers overheard' the request on the radio and informed Officer Smith that she had observed the same vehicle at 1:00 a.m.

[¶ 4.] Officer Smith then parked his patrol vehicle in a parking lot one block away with a line of sight on Eleven’s vehicle. Shortly after 2:00 a.m., Officer Smith moved his patrol vehicle directly behind Eleven’s vehicle. He exited his patrol vehicle and approached Eleven’s driver’s-side window. He observed Eleven sitting in the driver’s seat and believed Eleven was either sleeping or passed out. Officer Smith radioed for another officer to park a patrol vehicle in front of Eleven’s vehicle. Officer Smith testified that he could not tell if the occupant had the vehicle in drive or park and made the request out of his concern that he would startle the occupant and cause the occupant to accidentally accelerate his vehicle.

[¶ 5.] After the second officer parked a patrol vehicle in front of Eleven’s vehicle, Officer Smith knocked on Eleven’s driver’s-side window several times. Eleven briefly opened his eyes and looked toward the window. Eleven did not acknowledge Officer Smith. Eleven put his head back down. Officer Smith testified that he was concerned and opened Eleven’s driver’s-side door. Immediately, Officer Smith smelled the odor of alcohol. Eleven was subsequently arrested and charged with driving under the influence.

*742 [¶ 6,] On. April 7, 2015, Eleven filed a motion to suppress. Eleven asserted that Officer Smith did not have reasonable suspicion to support the intrusion. The circuit court held an evidentiary hearing on July 21, 2015. Officers Gebers and Smith testified. At the conclusion of the hearing, the court issued an oral ruling. It held that the circumstances ■ justified Officer Smith’s investigation under the community caretaker exception to the warrant, requirement. The court denied Eleven’s motion to suppress. It issued findings, conclusions, and an order. Eleven. appeals, asserting one issue for our review: whether the circuit court erred when it denied his motion to suppress on the basis that the community caretaker exception applied.

Standard of Review

[¶ 7.] “We review the circuit court’s grant or denial of a motion to suppress involving an alleged violation of a constitutionally protected right under the de novo standard of review.” State v. Smith, 2014 S.D. 50, ¶ 14, 851 N.W.2d 719, 723. We review the circuit court’s factual findings for clear error. State v. Mohr, 2013 S.D. 94, ¶ 12, 841 N.W.2d 440, 444. Once the facts have been determined, we give no deference to the court’s application of a legal standard to those facts. State v. Fierro, 2014 S.D. 62, ¶ 12, 853 N.W.2d 235, 239. Those questions of law are reviewed de novo. Id.

Analysis

[¶ 8.] This case concerns whether the community caretaker exception to the warrant requirement applies. The United States Supreme Court first recognized the exception in Cady v. Dombrowski, 413 U.S. 433, 93 S.Ct. 2523, 37 L.Ed.2d 706 (1973). It explained that law enforcement officers “frequently investigate vehicle accidents in which there is no claim of criminal liability and engage in what, for want of a better term, may be described as community caretaking functions, totally divorced from the detection, investigation, or acquisition of evidence relating to the violation of a criminal statute.” Id. at 441, 93 S.Ct. at 2528. We adopted the community caretaker exception in State v. Rinehart, 2000 S.D. 135, 617 N.W.2d 842. We said that “under appropriate circumstances a law enforcement officer may be justified in stopping a vehicle to provide assistance, without needing any reasonable basis to suspect criminal activity.” Id. ¶ 7 (quoting State v. Brown, 509 N.W.2d 69, 71 (N.D. 1993)). The officer must have a “demonstrable reason to believe that a driver may be unfit to drive for medical or other reasons” to justify a temporary stop “for the limited purpose of investigating the person’s well-being.” Id. The exception “should be cautiously and narrowly applied in order to minimize the risk that it will be abused or used as a pretext for conducting an investigatory search for criminal evidence.” Id. ¶ 10 (quoting Commonwealth v. Waters, 20 Va.App. 285, 456 S.E.2d 527, 530 (1995)).

[¶ 9.] Eleven asserts that the circuit court erred when it concluded that Officer Smith acted in his community caretaker capacity. He argues that Officer Smith could not articulate a demonstrable reason to be concerned about Eleven’s well-being. According to Eleven, Officer Smith relied on the community caretaker function after the fact, when in reality, Officer Smith detained Eleven and forced an interaction solely to satisfy Officer Smith’s curiosity as to why Eleven remained parked. He emphasizes that Officer Smith i-an a check on Eleven’s license plate and blocked Eleven’s vehicle from being able to leave. These circumstances, Eleven argues, evince that Officer Smith’s check on Eleven’s, well-being was not “totally divorced” from Officer Smith’s role as a law enforcer. To *743 conclude otherwise, according to Eleven, would “have serious ramifications”—it would allow law enforcement to justify “every stop by stating that they were acting in their community caretaker capacity[.]”

[¶ 10.] In State v. Deneui we recognized that, although many courts apply the community caretaker exception to the warrant requirement, “[n]o single test has been adopted by a majority of courts.” 2009 S.D. 99, ¶ 36, 775 N.W.2d 221, 237. We examined the tests applied by other courts and took “the best insights from the diverse authorities dealing with this exception[.]” Id. ¶41. Those best insights include: “the purpose of community caretaking must be. the objectively reasonable independent and substantial justification for the intrusion; the police action must be apart from the detection, investigation, or acquisition of criminal evidence; and the officer should be able to articulate specific facts that, taken with rational inferences, reasonably warrant the intrusion.” Id. We noted .that “the community caretaking function is more akin to a health and safety check.” Id.

[¶ 11.] Here, the circuit court found that Officer Smith was justified in stopping near Eleven’s vehicle and making contact with Eleven to determine if Eleven needed assistance. Based on our review, we conclhde that Officer Smith had an objectively reasonable basis to investigate Eleven’s well-being.. We do not construe Officer Smith’s run of Eleven’s license plate number or his request that a patrol car park in front of Eleven’s vehicle as proof that Officer Smith did not act in his role as a community caretaker. To do so would ignore that law enforcement officers serve multiple functions. “The law does not demand that an alert police officer must suppress his or her training and investigatory experience in carrying out the myriad of community caretaking functions society expects police officers to undertake for its protection.” Commonwealth v. Fisher, 86 Mass.App.Ct. 48, 13 N.E.3d 629, 633 (2014). As we recognized in Deneui, “[m]odern society has come to see the role of police officers as more than basic functionaries enforcing the law. From first responders to the sick and injured, to in-terveners in domestic disputes, and myriad instances too numerous to list, police officers fulfill a vital role where no other government official can.” 2009 S.D. 99, ¶ 49, 775 N.W.2d at 242; see also State v. Kramer, 315 Wis.2d 414, 759 N.W.2d 598, 610 (2009); see also Rist v. N.D. Dep’t of Transp., 665 N.W.2d 45, 49 (N.D. 2003).

[¶ 12.] ' Officer Gebers and Officer Smith may not have had a cause for concern at 1:00 or 1:40 a.m. when they noticed Eleven’s vehicle parked while running. During both of those observations, it appeared to the ’officers that Eleven was looking at his mobile phone. However, at 2:00 a.m., the vehicle was still running, remained parked in the same spot, and the occupant looked to be sleeping or passed out. The fact Eleven could have been simply sleeping is of no consequence. See Deneui 2009 S.D. 99, ¶42, 775 N.W.2d at 239. Officer Smith had reason to walk up to' Eleven’s driver’s-side window and attempt to make contact. Officer Smith knocked' on the driver’s-side window several times. Eleven did not acknowledge Officer Smith. He looked up for a moment and put his head back down. “These circumstances presented a crucial moment of judgment for” Officer Smith. See Deneui, 2009 S.D. 99, ¶ 49, 775 N.W.2d at 242. Should he act to ensure Eleven is not in need of assistance—conduct a health and safety check? We think so. Under the circumstances, Officer Smith had sufficient reason to act. The circuit court did not err when it dénied Eleven’s motion to suppress, concluding that the community care *744 taker exception to the warrant requirement applied.

[¶ 13.] Affirmed.