¶1 —A jury convicted petitioner Brent Richard Smith of methamphetamine manufacture based on evi*514dence gathered in a warrantless search of the abandoned house he occupied. The issue here is whether the facts of the case support an exception to the search warrant requirement.
¶2 After a suppression hearing, the trial court concluded that the search fell under the “emergency” exception to the warrant requirement and admitted the evidence. The Court of Appeals, Division Three, affirmed, stating that the “exigent circumstances,” “protective sweep,” and “community caretaking” exceptions all applied. State v. Smith, 137 Wn. App. 262, 265-66, 153 P.3d 199 (2007), review granted, 162 Wn.2d 1023, 179 P.3d 839 (2008). We now affirm the Court of Appeals with different reasoning and affirm the conviction.
FACTS
¶3 The Tri-City Metro Drug Task Force (Task Force) received information from the Federal Bureau of Investigation (FBI) that a tanker truck containing 1,000 gallons of anhydrous ammonia had been stolen from Sprague, Washington. “Anhydrous amonia [sic] is extremely toxic. It is one of the most potential [ly] dangerous chemicals used in agriculture. It can cause severe chemical burns in victims exposed to it in small amounts. [Exposure] [Requires immediate treatment to minimize damage.” Verbatim Report of Proceedings (VRP) (Dec. 17, 2004) at 15 (testimony of Detective Horacio Gonzales); Clerk’s Papers (CP) at 89. The Task Force received an anonymous tip that the stolen tanker truck was located at 203212 East State Route 397, Kennewick, Benton County.
¶4 The Task Force, the Washington State Patrol, the Benton County Sheriff’s Office, and the Benton County Fire Department responded to the tip and converged on the location. The property consists of a fenced acre of land containing a two-story house, a shed, and several junk cars. The tanker truck was located fewer than 75 feet from the house. According to the anonymous tip, the house was vacant.
*515¶5 Detective Gonzales of the Task Force was familiar with the property, having previously responded to the property for methamphetamine-related incidents. Detective Gonzales and Detective Clem made the initial entry onto the property to secure the truck against the risk of leaking anhydrous ammonia. This initial entry was warrantless.1 Both officers wore protective gear. They secured the truck and verified it was not leaking.
¶6 While the tanker was being secured, 10 other officers surrounded the house, knocked on the door, and announced their presence. While securing the house one officer saw through a window “what appeared to be a rifle . . . located in the living room area of the first floor next to a mattress.” CP at 87. The officers also saw in the yard between the truck and the house “a propane tank with a modified and discolored valve, which Detective Gonzalez [sic] recognized by training and experience to be consistent with the storage of anhydrous ammonia.” CP at 88; VRP (Dec. 17, 2004) at 21.
¶7 Approximately 10 minutes after the officers announced their presence, Smith and Kimberly Yvonne Breuer exited the house. They told the officers they found the house open a few days prior and had been staying there since then.2 They told the officers they were aware of the truck but unaware of its contents. The officers handcuffed and detained Smith and Breuer.
¶8 Looking into the open door, the officers noticed that the apparent rifle was no longer where they had previously seen it. The officers asked Smith and Breuer if there was anyone else in the house. They responded that no one else was there.
¶9 Detectives Gonzales, Gregory, Brazeau, and Cole entered the house to perform a “safety sweep.” VRP (Dec. 17, *5162004) at 24. They searched in places where a person could be hiding, but did not look in other spaces, such as drawers. During this search, the officers seized a 16-gauge shotgun from a second floor crawl space. The officers also noticed items consistent with the manufacture of methamphetamine. No one was inside the house.
¶10 The officers later got a warrant based on the information gathered from the first search of the house. The search of the house pursuant to the warrant revealed a methamphetamine laboratory.
¶11 On November 23, 2004, the State charged Smith with one count of manufacture of a controlled substance, methamphetamine. Smith moved to suppress the evidence obtained during the warrantless search of the house. The trial court denied Smith’s motion following a suppression hearing.
¶12 On February 18, 2005, a jury found Smith guilty. Smith appealed. The Court of Appeals affirmed Smith’s conviction, holding the warrantless search of the house was justified under three exceptions to the warrant requirement: “community caretaking,” “protective sweep,” and “exigent circumstances.” Smith, 137 Wn. App. at 265-66. We granted review.
STANDARD OF REVIEW
¶13 “Unchallenged findings of fact entered following a suppression hearing are verities on appeal.” State v. Gaines, 154 Wn.2d 711, 716, 116 P.3d 993 (2005). Neither party assigns error to the findings of fact, so we take them to be true. “We review a trial court’s conclusions of law in an order pertaining to suppression of evidence de novo.” State v. Carneh, 153 Wn.2d 274, 281, 103 P.3d 743 (2004).
*517ANALYSIS
¶14 The United States and Washington Constitutions prohibit most warrantless searches of homes.3 However, the police may search without a warrant under one of the “ Tew jealously and carefully drawn exceptions to the warrant requirement.’ ” State v. Kinzy, 141 Wn.2d 373, 384, 5 P.3d 668 (2000) (quoting State v. Houser, 95 Wn.2d 143, 149, 622 P.2d 1218 (1980)). The State bears the burden of proving that the warrantless search fits within one of these closely guarded exceptions. Id. The police may not use an exception as pretext for an evidentiary search. State v. Ladson, 138 Wn.2d 343, 356, 979 P.2d 833 (1999).
Exigent Circumstances
¶15 Under one recognized exception, police may search without a warrant when “exigent circumstances” justify the search. State v. Cardenas, 146 Wn.2d 400, 405, 47 P.3d 127, 57 P.3d 1156 (2002). The rationale behind the exigent circumstances exception “is to permit a warrantless search where the circumstances are such that obtaining a warrant is not practical because the delay inherent in securing a warrant would compromise officer safety, facilitate escape or permit the destruction of evidence.” State v. Audley, 77 Wn. App. 897, 907, 894 P.2d 1359 (1995), quoted in Cardenas, 146 Wn.2d at 417 (Alexander, C.J., dissenting). Washington courts have long held that “danger to [the] arresting officer or to the public” can constitute an exigent circumstance. State v. Counts, 99 Wn.2d 54, 60, 659 P.2d 1087 (1983).
*518 ¶16 We determine whether an exigent circumstance existed by looking at the totality of the situation in which the circumstance arose. State v. Carter, 151 Wn.2d 118, 128, 85 P.3d 887 (2004). We have set out six factors to guide this analysis:
(I) the gravity or violent nature of the offense with which the suspect is to be charged; (2) whether the suspect is reasonably believed to be armed; (3) whether there is reasonably trustworthy information that the suspect is guilty; (4) there is strong reason to believe that the suspect is on the premises; (5) a likelihood that the suspect will escape if not swiftly apprehended; and (6) the entry [can be] made peaceably.
Cardenas, 146 Wn.2d at 406 (citing State v. Terrovona, 105 Wn.2d 632, 644, 716 P.2d 295 (1986)). Because we analyze the totality of the situation, circumstances may be “exigent” even if they do not satisfy every one of the six listed elements. Id. at 408.
¶17 Under the extraordinary facts of this case, the responding officers identified a legitimate threat to officer and public safety sufficient to constitute an exigent circumstance. Upon arriving at the property, they found a stolen tanker truck parked next to the house, pressure filled with 1,000 gallons of an extremely dangerous chemical. Presumably, someone hiding in the house had stolen the tanker, in a criminal act serious enough to warrant FBI involvement. The officers saw a firearm through the window of the house. By the time Smith and Breuer had emerged from the house, the firearm had disappeared, and Smith and Breuer did not have it.
¶18 The trial court made a finding of fact that Detective Gonzales was concerned that a person with the missing gun inside the house would shoot the pressurized tank of anhydrous ammonia, causing a grave health risk for all those in the vicinity. He was also concerned that a person hiding in the house would shoot directly at the officers.
¶19 There was no pretext here. The officers’ actions were consistent with their stated purpose of preventing the *519risks to themselves and the public. They looked only in spaces where a person could hide, and they confiscated only the missing gun.
¶20 Under the unusual facts presented here, most notably the combination of large quantities of a toxic chemical and the missing firearm, the officers’ search falls under the “officer and public safety” prong of the “exigent circumstances” exception to the warrant requirement. The trial court was correct in refusing to suppress the evidence gained in connection with the search.
Other Warrant Exceptions
¶21 In its discussion of exigent circumstances, the Court of Appeals quoted and applied standards related to the “emergency” exception to the warrant requirement. Smith, 137 Wn. App. at 269. While some older Washington cases treat “emergency aid” as a subset of the “exigent circumstances” exception, see State v. Loewen, 97 Wn.2d 562, 568, 647 P.2d 489 (1982), the more recent cases analyze it under the separate “community caretaking” category, as the United States Supreme Court has always done, see Kinzy, 141 Wn.2d at 387; Cady v. Dombrowski, 413 U.S. 433, 441-42, 93 S. Ct. 2523, 37 L. Ed. 2d 706 (1973).
¶22 Because we hold that the evidence was properly admitted under the “officer and public safety” subset of the exigent circumstances exception, we need not address whether the “community caretaking” and “protective sweep” exceptions apply.
CONCLUSION
¶23 We hold that the officers were properly acting under the exigent circumstances exception when they entered the house. As such, the evidence obtained in connection with that search was admissible. We affirm the Court of Appeals decision with different reasoning, and we affirm Smith’s conviction.
C. Johnson, Madsen, Chambers, Fairhurst, and Stephens, JJ., concur.Smith does not challenge the legality of this warrantless search and seizure.
The State does not challenge Smith’s expectation of privacy in this house. See State v. Francisco, 107 Wn. App. 247, 253, 26 P.3d 1008 (2001) (“Persons may challenge searches of the premises they occupy even though they are not parties to the legal arrangements concerning the possessory interest.”).
U.S. Const, amend. IV (“The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated.”); Wash. Const, art. I, § 7 (“No person shall be disturbed in his private affairs, or his home invaded, without authority of law.”). Smith does not argue that article I, section 7 provides more protection than the Fourth Amendment in this case. When a party merely invokes article I, section 7 but does not provide analysis on the issue of whether under the circumstances article I, section 7 provides greater protection, this court will not address the issue. State v. Kinzy, 141 Wn.2d 373, 384 n.33, 5 P.3d 668 (2000) (citing State v. Hill, 123 Wn.2d 641, 648, 870 P.2d 313 (1994)).