A police officer comes to a mother’s home to arrest her son. He isn’t there. She later notifies the son that police want to arrest him. Should she be guilty of anything other than possibly loving a son who may not deserve it? What about a motorist who warns other motorists that they are entering a police “speed trap”? The price will prove extremely high if reasonable human conduct becomes criminal. However, the line between reasonable conduct and conduct that interferes with the performance of official conduct must be drawn.
Gabriel Bucher recognizes that he failed to obey a national park ranger’s command that he leave a National Park trail and that a regulation made such conduct unlawful. He vigorously contends that he did nothing to “interfere” with the rangers in the exercise of their duties, and that he was wrongly charged with violating 36 C.F.R. § 2.32(a)(l)(2000). His confusion is understandable, but also misplaced. By *931walking down the trail ,to warn a person whom the rangers intended to arrest, he did interfere with both the rangers and their official duties.
Bucher argues that there is no direct evidence of what he said when he spoke to the person and therefore, it cannot be assumed that he warned the person of the rangers’ intent. This, he reasons, precludes a finding that he interfered. Bucher’s argument ignores the truth of fact finding — facts and reasonable inferences from those facts are the province of the trier of fact. What he said can only be known to the listener, but nothing precludes a ranger or a finder of fact from drawing reasonable inferences from what was observed.
BACKGROUND
The night of April 26, 2001, rangers patrolling the Haleakala National Park met 14 hikers staying at a cabin on a trail about five miles from the nearest road. When they noticed several persons with marijuana, the rangers cited those who did not relinquish their contraband, then left the group to complete its trip.
That evening, Ranger Michael Boxx discovered that one of the hikers cited, 79-year-old Robert Jacobs, had given a false name. Aware of the group’s plan to complete its hike the next day, Boxx and other rangers went to the trail head parking lot in the morning to wait for Jacobs to arrive so they could arrest him.
While the rangers were staking out the trail head, one of the hikers, Gabriel Bucher, emerged from the trail. Boxx informed Bucher why they were there and asked where Jacobs was. Bucher indicated that he was 15 to 20 minutes behind him on the trail. Boxx told Bucher he was free to leave, but instructed him not to return to the trail. Boxx later testified that he gave this order because he “did not want [Bucher] to warn Mr. Jacobs of what we had intended for him so that it would not prolong the investigation with him going back into the crater and us following him.”
About five minutes later, Boxx noticed that Bucher had left the parking' lot and returned to the trail. Through binoculars, he watched Bucher walk down the trail and huddle with Jacobs about a quarter mile from the trail head. Seeing this, the rangers decided to intercept Jacobs on the trail. As they approached Jacobs and Bucher, Jacobs suddenly fell to the ground, slipping into an apparent unconscious state. The rangers attended to Jacobs at the scene and called for an ambulance. After evacuating Jacobs from the park, the rangers concluded that he had feigned unconsciousness, apparently to avoid arrest.
For his role, Bucher was charged with intentionally interfering with a government employee or agent engaged in an official duty under 36 C.F.R. § 2.32(a)(1) (2000), a misdemeanor. After a bench trial, a magistrate judge found Bucher guilty and fined him $35; Bucher appealed to the district court, which affirmed his'conviction. He appealed. We affirm. '
DISCUSSION
1. Scope of 36 C.F'R. § 2.32(a)(1).
Bucher first contends the district court erred in ruling that the regulation under which he was charged applied to his conduct. A district court’s • interpretation of a regulation is reviewed de novo. United States v. Willfong, 274 F.3d 1297, 1300 (9th Cir.2001).
Section 2.32 of Title 36 C.F.R., entitled “Interfering with Agency Functions,” provides in relevant part:
(a) The following are prohibited:
*932(1) Interference. Threatening, resisting, intimidating, or intentionally interfering with a government employee or agent engaged in an official duty, or on account of the performance of an official duty.
(Emphasis added.) Armed with a quiver of statutory construction rules, Bucher argues that § 2.32(a)(1) did not apply to him because he did not interfere with the park rangers themselves, but only indirectly with their “official duties” by disobeying the order to leave. He argues that the plain language of the regulation limits its application to acts that directly interfere “with a government employee [personally], not with the duty that the employee is carrying out.” Bucher’s reading of § 2.32(a)(1) is not reasonable.
To interpret a regulation, we look first to its plain language. United States v. Hagberg, 207 F.3d 569, 574 (9th Cir.2000) (citing Reno v. National Transp. Safety Bd., 45 F.3d 1375, 1379 (9th Cir.1995)). As with legislation, we presume the drafters said what they meant and meant what they said. Connecticut Nat’l Bank v. Germain, 503 U.S. 249, 253-54, 112 S.Ct. 1146, 117 L.Ed.2d 391 (1992). If the regulation is unambiguous, its plain meaning controls unless such reading would lead to absurd results. Reno, 45 F.3d at 1379. The term “interfere” is unambiguous and is defined as “to oppose, intervene, hinder, or prevent.” Willfong, 274 F.3d at 1301 (quoting WEBSTER’S NEW WORLD DICTIONARY 704 (3d College ed.1998)). Similarly, “interference” means an “act of meddling in another’s affairs ... [a]n obstruction or hindrance.” Black’s Law Dictionary, 818 (7th ed.1999). Under these definitions, it is impossible to separate government employees from their duties under § 2.32(a)(1). One who interferes with an employee’s official duties “meddles” in that employee’s “affairs,” thus interfering with the employee herself. Similarly, one who interferes with a government employee who is engaged in an official duty has necessarily compromised the performance of those duties. By its plain language, § 2.32(a)(1) criminalizes interference with employees and their duties.
That the employee and his duties occupy two sides of the same coin is reflected in the regulation’s purpose. When the regulation was enacted in 1983, the National Park Service stressed that § 2.32(a) “is necessary to ensure that government operations proceed without interference.” 48 Fed.Reg. 30252, 30270 (June 30,1983) (emphasis added). Although it rejected more sweeping prohibitions that were proposed, the Service also commented, “the prohibitions in[§ 2.32] were narrowly drafted and intended to give the Service the authority it needs to ensure that government operations proceed without interference.” 48 Fed.Reg. 30252, 30259 (June 30,1983) (emphasis added). The focus on government operations — as opposed to the employees themselves — reveals that the regulation’s goal is to protect and enable government functions and to protect the employees who perform them.
We have recently interpreted analogous regulatory language in this way. In United States v. Willfong, the defendant disobeyed a Forest Service agent’s order to cease logging operations on Forest Service land. He was charged under 36 C.F.R. § 261.3(a), which, like § 2.32(a)(1), prohibits “interfering with any forest officer engaged in or on account of the performance of his official duties.... ” 274 F.3d at 1299-30. Concluding the term “interfering” is unambiguous, we held that Willfong’s failure to obey the order violated § 261.3(a) because the continued logging activity interfered with the agent’s effort to enforce the “shut-down” order. Id. at 1301.
*933Bucher contends that both Willfong and the district court in this case misread “interfering” because, in both regulations, that term is grouped with “threatening,” “resisting” and “intimidating.” 36 C.F.R. § 2.32(a)(1); 36 C.F.R. § 261.3. Since those terms connote acts that involve direct confrontation between two people, Bucher argues, “interfering” should be similarly read to mean direct physical or verbal action that obstructs the agent herself. Such reading, he contends, is required under the rule of noscitur a sociis, which provides that “words grouped in a list should be given related meaning.” Dole v. United Steelworkers of America, 494 U.S. 26, 37, 110 S.Ct. 929, 108 L.Ed.2d 23 (1990) (citation omitted).
As the majority in Willfong noted, however, such construction rules do not apply since “interfering” is unambiguous, and because “threatening, resisting intimidating, or intentionally interfering” are stated dis-junctively so that proof of any one of the acts alone constitutes an offense. 274 F.3d at 1303 (citing United States v. Hoff, 22 F.3d 222, 223 (9th Cir.1994)). Since the terms denote separate and distinct criminal acts, another interpretation rule is invoked which requires the regulation to be read so that none of its terms are rendered redundant. Kungys v. United States, 485 U.S. 759, 778, 108 S.Ct. 1537, 99 L.Ed.2d 839 (1988); see also Boise Cascade Corp. v. United States EPA, 942 F.2d 1427, 1432 (9th Cir.1991) (the use of different words in the same sentence of a statute signals an intent to distinguish between those words.) Bucher’s reading of § 2.32(a)(1) conflates “interfering” and”resisting” so that they would cover essentially the same conduct.
Bucher also argues that since his act of “silently disobeying” Ranger Boxx’s order to leave the trail was the basis for the charge, he should have been prosecuted under 36 C.F.R. § 2.32(a)(2), which prohibits “[vjiolating the lawful order of a government employee or agent authorized to maintain order and control public access and movement during ... law enforcement actions.... ” Applying the more general Subsection (a)(1) to him, Bucher argues, violates the rule that specific provisions of statutes and regulations must govern over general ones. See NLRB v. A-Plus Roofing, Inc., 39 F.3d 1410, 1415 (9th Cir.1994).
Whatever the overlap between Subsections (a)(1) and (a)(2), Bucher’s argument is flawed. It wrongly assumes that his failure to obey was the sole basis for his conviction. Bucher not only disobeyed Ranger Boxx. He walked a quarter mile down the trail and spoke to the target of the rangers’ investigation, after which that person employed a ruse designed to obstruct his arrest. Bucher’s actions invoked Subsection (a)(2), which applies to a broader range of conduct.
Since Bucher did more than disobey, his argument based on the dissent in Willfong is unpersuasive. The Willfong dissent argued that Willfong was not guilty of interference because he did nothing to directly hinder the agent’s duties — he simply disregarded an order and continued logging. 274 F.3d at 1304. The dissent further pointed out that disobeying an order could not be equated with “interference” because numerous regulations, including § 2.32(1), contain sections that specifically address disobedience separately and distinctly from other sections dealing with interference. Id. at 1306. Where Willfong merely persisted in cutting trees despite an order not to, Bucher actively meddled in the rangers’ effort to arrest Jacobs. Thus, even if we were to adopt the Willfong dissent with regard to 36 C.F.R. § 2.32(a), it would not apply to these facts since Bucher’s conduct falls squarely within *934Subsection (l)’s prohibition against interfering.
2. Sufficiency of the Evidence.
Bucher alternatively argues that, even accepting the district court’s interpretation of 36 C.F.R. § 2.32(a)(1), there was insufficient evidence to prove he intentionally interfered with a government employee or agent engaged in an official duty. We review sufficiency claims de novo to determine whether, viewing the evidence in the light most favorable to the prosecution, any rational trier of fact could have found the essential elements of the crime beyond a reasonable doubt. Jackson v. Virginia, 443 U.S. 307, 319, 99 S.Ct. 2781, 61 L.Ed.2d 560 (1979); United States v. Odom, 329 F.3d 1032, 1034 (9th Cir.2003).
Section 2.32(a)(1) requires proof of a specific intent to interfere with a government agent. United States v. Buehler, 793 F.Supp. 971, 974 (E.D.Wash.1992). “[C]ulpable intent ... can be inferred from the defendant’s conduct and from the surrounding circumstances.” United States v. Hernandez-Franco, 189 F.3d 1151, 1155 (9th Cir.1999) (quoting United States v. Smith, 962 F.2d 923, 931 (9th Cir.1992)) (alteration in Hernandez-Franco). Here Bucher walked down the trail and spoke to Jacobs within minutes of learning that the rangers planned to arrest him. From this, any rational fact finder could conclude that he: (1) returned to the trail to help Jacobs avoid arrest (2) warned Jacobs of the rangers’ intent, which, (3) enabled Jacobs- to concoct and mentally rehearse his performance. Although there is no direct evidence of what he actually said to Jacobs, it is reasonable to conclude a warning was delivered based on what Bucher knew before the conversation and on what Jacobs did shortly afterward. ’ Circumstantial evidence establishes an intent to interfere.
The evidence also establishes that Bucher hindered the rangers’ arrest efforts. Bucher’s conversation with Jacobs validated Boxx’s concern that he would meddle in the investigation, leading the rangers to try and intercept Jacobs on the trail rather than wait for him in the parking lot. Furthermore, by “playing possum” — an act likely facilitated by Bucher? warning — Jacobs added hours to the arrest process by forcing the rangers to carry him off the trail, call and wait for an ambulance, and escort him to the hospital. Bucher’s intentional acts thus set in motion a chain of events that interfered with the rangers and their official duties of investigating and arresting Jacobs. The evidence was sufficient.
AFFIRMED.