The defendants appeal their convictions for entering a temporarily off-limits military area in the ocean waters adjacent to Camp Garcia, on the island of Vieques, Puerto Rico, in violation of 18 U.S.C. § 1382. Because a lawful regulation barring entry existed and the defendants had actual notice of it, we affirm the convictions.

The record reflects that on April 28, 2001, brothers Hector and Angel Ventura-Melendez, the defendants, left the Esperanza harbor in Puerto Rico in a small fishing boat at approximately 10:00 a.m. with eight to ten other small boats headed in the direction of the nearby Navy firing range in the waters adjacent to Camp Garcia. The defendants were fishermen whose family traditionally fished in those waters.

The Coast Guard cutter VASHON, patrolling the area to enforce a temporary security zone, observed the fleet of small boats heading toward the prohibited area. The regulation creating the temporary security zone, although signed and dated April 26, 2001, was not published until May 3, 2001. Thus, the publication provided only retrospective notice of the zone's creation from April 26 through April 30 for a bombing and gunnery range. 66 Fed.Reg. 22,121 (May 3, 2001). The regulation prohibited vessels and people from entering the zone unless specifically authorized to do so. Id.

The Coast Guard announced the security zone over VHF radio on the morning of the defendants' apprehension, although the defendants' boat was not equipped with a VHF radio and they were unlikely to have heard the broadcasts. There is no indication in the record whether the Coast Guard utilized other notification procedures such as postings in public places or placement in local newspapers.

Concerned that the flotilla of small boats was headed directly into the zone, the Coast Guard dispatched a rigid hull inflatable boat and four personnel to intercept the flotilla. The Coast Guard's inflatable boat was bright orange and clearly marked "U.S. Coast Guard." In addition, the Coast Guard personnel were wearing coveralls with "U.S. Coast Guard" written on the front and back in large lettering as well as life jackets marked "U.S. Coast Guard." The lieutenant in charge, who remained on the VASHON, directed the Coast Guard personnel on the small boat to ask the fishing boats to turn around immediately and give them an opportunity to leave the security zone.

As the Coast Guard boats approached the flotilla, the Guardsmen attempted to stop the fishermen, yelling in Spanish, waving their arms, and using hand signals. The Guardsmen hoped to come alongside the small boats and explain that they were entering a security zone. Members of the flotilla, however, refused to heed the Coast Guard's warnings; the defendants in particular shook their fists and shouted "carajo."1 The Coast Guard boat, along with a Navy harbor security boat and a second inflatable boat dispatched from another Coast Guard cutter, gave chase to the fishing boats.

When the Coast Guard personnel yelled, from a distance of approximately twenty yards, "Security zone, stop your boat," the defendants looked at them and sped further into the zone. Because there were several boats from the flotilla then entering the security area, the Coast Guard focused its efforts on intercepting the slowest of the boats, which belonged to the defendants. The Coast Guard gave chase and was eventually granted permission to forcibly stop the defendants' boat within the security zone.

Following a nonjury trial, the defendants' Rule 29 motions for acquittal were denied and they were convicted of violating section 1382, prohibiting entry into "any military, naval, or Coast Guard reservation, post, fort, arsenal, yard, station, or installation, for any purpose prohibited by law or lawful regulation," and sentenced. The defendants argue that a lawful regulation, required by section 1382, did not exist, and, even if it did, it could not be enforced against them because they had no notice of it. We review the district court's interpretation of federal statutes de novo. See United States v. Maxwell, 254 F.3d 21, 24 (1st Cir.2001) (citing United States v. Carroll, 105 F.3d 740, 744 (1st Cir.1997)).

The defendants argue that a "lawful regulation" did not exist at the time they were arrested because the rule establishing the temporary security zone had not yet been published, assertedly in violation of the Administrative Procedures Act (APA), 5 U.S.C. §§ 500-596.2

Notice of a proposed rule, opportunity for public comment, and publication of the final rule are central tenets of the rule making process outlined by section 553 of the APA. See 5 U.S.C. § 553(b) & (d). Nevertheless, rules involving a "military or foreign affairs function" of the federal government are exempted. Id. § 553(a)(1). The defendants contend that creation of the rule here, regardless of its purpose of setting aside an area for military activity, was a civilian rather than a military function. They reason, without citing authority, that a rule regulating civilians fulfills a civilian, not a military, function.

Here, the rule created a temporary security zone comprised of a combined area of ocean and land adjacent to a bombing range at a military installation. A rule designed to render safe and feasible the performance of a military function by preventing interference on the part of civilians necessarily serves a military function as well as a civilian one. Specifying a security zone seems to us no less directly related to military action than identifying targets or establishing the time for artillery exercises.3 Thus, the proposed zone was well within the concept of military function.

The defendants also contend that even if the military function exception saves the rule from having violated section 553, it failed to hurdle the publication requirement of section 552, which was not, they assert, subject to the exception. Because the rule was not published until after its implementation, the defendants contend that section 552 was violated.

Regardless of whether the military function exception applies to section 552, however, there was no inconsistency with that provision because it also provides a role for actual notice. Section 552(a)(1) contemplates that actual notice may at times supercede constructive notice through publication, explaining that "[e]xcept to the extent that a person has actual and timely notice of the terms thereof, a person may not in any manner be required to resort to, or be adversely affected by, a matter required to be published in the Federal Register and not so published." See also United States v. Mowat, 582 F.2d 1194, 1201 n. 5 (9th Cir.1978) ("By virtue of [section 552(a)(1)'s actual notice] provision, regulations that are unpublished in violation of the [APA] are unlawful only as against those who have no actual and timely knowledge of their contents.").4

Because the rule's promulgation did not violate the APA, the fact that the rule was not published until after the defendants' arrest for violating the temporary security zone does not disabuse the rule of its status as a "lawful regulation."

The defendants next argue that even if the regulation was valid, they had no notice of it, and therefore enforcing it against them violated their due process rights as well as the Ex Post Facto Clause of Article I, prohibiting the criminalization of innocent actions after the fact. We do not reach the issue of whether the defendants had constructive notice through VHF radio transmissions since the government has not so alleged. The government instead argues that the defendants had actual notice that their entry onto the zone was prohibited. See Maxwell, 254 F.3d at 24 (holding that convictions under section 1382 require "knowledge or notice, actual or constructive, that such entry was prohibited"); see also Nason v. Kennebec County CETA, 646 F.2d 10, 19 (1st Cir. 1981) ("[E]ven were publication called for, its absence would not invalidate an otherwise proper rule where the party adversely affected had `actual and timely notice.'").

In cases with similar fact patterns, courts have confirmed that actual notice is sufficient to support a conviction. In United States v. Parrilla Bonilla, 648 F.2d 1373 (1st Cir.1981), the defendants asserted that they had not seen the Naval Instruction prohibiting entry into a beach closed for naval operations. Id. at 1378. This court found that even if the defendants had not seen the Naval Instruction, the convictions were sustainable if the government showed that the defendants "reasonably understood that naval authorities had declared the base closed to all persons who lacked passes or other authorization." Id. at 1378, 1383 (overturning the convictions and holding that "it is doubtful whether the record supports a finding that appellants reasonably knew that their presence was forbidden"). In Mowat, the Ninth Circuit upheld the defendants' convictions because they had actual notice that their unauthorized entry into a military reservation violated a regulation, even though it was not published until many months after their arrests. Mowat, 582 F.2d at 1201-03.

The district court here concluded that ample circumstantial evidence showed that the defendants were aware that the Coast Guard was trying to stop them from entering a security zone. United States v. Ventura Melendez, 186 F. Supp. 2d 55, 59 (D.P.R.2001). The court noted that "the Coast Guard intercepted the Defendants, yelled at them to stop, in an attempt to impede transgression into a security zone only to receive from them obscene words followed by a defiant speed-off.... Hand signals were also used urging Defendants to stop to no avail." Id. The court concluded that "[e]ven accepting as true Defendants' version of the facts in this case, the Court is left with only one acceptable conclusion: they had actual knowledge that the security zone had been established prior to their trespass." Id. at 58.5

Nevertheless, the defendants suggest that their reaction reflected only frustration with perceived harassment in their traditional fishing grounds. They claim that their shouting and fist waving did not indicate an awareness that they were entering a forbidden zone, but rather distress that they would be unable to fish in their customary area or even to remove their traps to avoid damage from passing military vessels. One may empathize with their predicament, but the fact remains that they blatantly disregarded the Coast Guard's order that they leave the area.6

Reviewing the record, we conclude that the court's finding of actual notice was amply supported. As such, the defendants' convictions were not invalid and did not violate the Due Process or Ex Post Facto Clauses.

The defendants' final argument is that one of them was a "mere passenger" who did not possess the "purpose" required by section 1382. The defendants baldly assert that one of them — they do not specify which — was a passenger who was merely present in the zone, rather than willfully transgressing it. The evidence presented, however, suggested that both inhabitants of the vessel were involved in shouting and waving fists at the Coast Guard. More importantly, the evidence does not reveal any suggestion that either defendant at any time expressed a desire to exit the boat, turn it around, or otherwise leave the security zone. Without more, it is difficult to conceive that the actions of either defendant were not purposeful.

For the reasons set forth above, the order of the district court is affirmed.