# 2026-16359: Hawaii Paradise Gets 'Danger Zone' for More Marine Weapons Firing

2026-16359, Danger Zone: Pacific Ocean at Marine Corps Base Hawaii, Kaneohe Bay, Island of Oahu, Hawaii, is a Federal Register rule from Defense Department, Engineers Corps published 2026-08-11, effective 2026-09-10; PRIA reads it as touching household money (as of 2026-08-18).

- Canonical: https://policyrisk.com/federal-register/2026-16359
- As of: 2026-08-18
- Plain-text twin of the page above; the HTML and this file carry the same facts.

## Facts
- Document number: 2026-16359
- Title: Danger Zone: Pacific Ocean at Marine Corps Base Hawaii, Kaneohe Bay, Island of Oahu, Hawaii
- Type: Rule
- Agencies: Defense Department; Engineers Corps
- Citation: 91 FR 51594
- Published: 2026-08-11
- Effective: 2026-09-10
- Comments close: not stated
- Significant: no
- Touches household money: yes
- Regulation identifier numbers: none
- Last updated: 2026-08-18

## In one line

Hawaii Paradise Gets 'Danger Zone' for More Marine Weapons Firing

## Summary

The United States Army Corps of Engineers (Corps) is amending its regulations for an existing danger zone at the U.S. Marine Corps Ulupau Crater Weapons Training Range in the vicinity of Kaneohe Bay, Hawaii. The Marine Corps requested a change to the current hours that weapons firing may be conducted. This amendment is necessary in order to ensure public safety.

## Effects PRIA read

- New Weapons Firing Hours Set: benefit, low. Weapons firing at the Ulupau Crater Weapons Training Range may occur any time between 6:00 a.m. and 2:00 a.m., Monday through Sunday. This change takes effect on September 10, 2026, and updates the danger zone hours in Kaneohe Bay, Island of Oahu, Hawaii.
- Corps Finds No Major Small Business Costs: benefit, low. The Corps determined that amending the existing danger zone hours will not have a significant economic impact on a substantial number of small entities, and small governments will not be significantly and uniquely affected. This finding is part of the Regulatory Flexibility Act review for the rule.
- Visible Warning Beacons Provided: benefit, low. The rule confirms the red light beacons/flagpoles are located at 21.458833, -157.724557 (north-facing) and 21.450469, -157.727293 (east-facing) and that those beacons are visible throughout the danger zone. The beacons are stated to conform to safety standards for the Ulupau Crater danger zone.
- No Limits on Firing Frequency or Duration: mixed, low. The rule states that the frequency and duration of firing events are not specified because compliance with the Marine Corps Base Hawaii training mission requires flexibility. The Corps did not set numeric limits on how often or how long firing events may occur.

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## Sources
- [2026-16359 on federalregister.gov](https://www.federalregister.gov/documents/2026/08/11/2026-16359/danger-zone-pacific-ocean-at-marine-corps-base-hawaii-kaneohe-bay-island-of-oahu-hawaii)
- [2026-16359 as published (PDF)](https://www.govinfo.gov/content/pkg/FR-2026-08-11/pdf/2026-16359.pdf)

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Source: PRIA, https://policyrisk.com/federal-register/2026-16359 (as of 2026-08-18).