Wildfires are becoming larger, more frequent and more widespread. The Los Angeles wildfires could be the costliest natural disaster in U.S. history, and the Lahaina fire on the island of Maui, Hawaii, was the deadliest wildfire in over 100 years. Canada also experienced its worst fire season ever in 2023, leading to dangerous air quality in parts of the U.S. for the first time.

Since 1983, the
National Interagency Fire Center has documented an average of approximately 70,000 wildfires per year. In 2024, more than
56,000 wildfires burned 8.6 million acres. That was below the 10-year average for number of fires, but
surpassed the average number of acres burned by nearly 2 million.
Land area burned by wildfires varies by state. More fires occur in the eastern and central United States, but those in the West are larger and burn more acreage. In fact, burned acreage in the West has increased noticeably in nearly every month of the year, not just during peak fire season.
While fire is an important agent of renewal for vegetated ecosystems, its effects can be devastating. Often triggered by lightning strikes or human activities, fires are then fueled by dry conditions, intense heat, high winds and flammable materials, rapidly spreading through forests, grasslands or bush areas where people now live in larger numbers.
Wildfires are also stressing budgets at all levels. The Department of the Interior and Forest Service nearly doubled their combined spending on wildfire management from 2011 to 2020. At the state level, wildfire suppression costs in Washington averaged $153 million per year over the past five years. And suppression costs are only a small fraction of the total cost of wildfires when considering disaster recovery, business losses, damaged infrastructure and public health.
Effect of Wildfires on Military Operations
Wildfire is a constant concern for the military. Wildfire impacts the ability to conduct military training and put personnel at risk. But wildfire does not have to breach the fence line of an installation to jeopardize military operations. Even a military installation that is not directly affected can suffer disruption due to wildfire smoke, damaged electrical power lines, contaminated water supply, limited access to roadways and bridges, or impacts to off-base housing.
Installation Examples
- In 2012, the Waldo Canyon Fire consumed over 18,000 acres, threatening the U.S. Air Force Academy outside Colorado Springs, Colo. Damages totaled $16 billion, and Air Force resources were mobilized including Air National Guard personnel, ground vehicles and C-130s.
- A wildfire at Vandenberg Air Force Base in southern California in 2016 burned over 10,000 acres and delayed a scheduled satellite launch.
- In 2020, more than 200 U.S. Army North Soldiers from Washington’s Joint Base Lewis-McChord were deployed to California to support wildland fire ground response operations in the August Complex. The August Complex of fires began as 37 lightning-ignited fires and burned more than 1 million acres.
- Hundreds of DOD personnel actively supported response and recovery efforts after the Lahaina Fire in Hawaii in 2023.
DOD's Office of the Secretary of Defense has several programs dedicated to supporting installations and ranges with responding to wildfire threats.
Readiness and Environmental Protection Integration Program
The Readiness and Environmental Protection Integration program supports off-base wildfire management. The REPI program prevents incompatible development, protects critical habitat, and improves military installation resilience. Through the REPI program, the military services can enter into cost-sharing agreements with partners to plan, develop, and implement military installation resilience projects designed to reduce risks from droughts and wildfires. By supporting wildfire risk reduction measures, including conducting prescribed burns and removing hazardous fuel loads, the REPI program is positioned to help installations, surrounding communities and states avoid serious damages from hazardous wildfires.
REPI Project Examples
- Cheyenne Mountain Space Force Station [Colorado]
Cheyenne Mountain Space Force Station faces significant wildfire risks from both accidental fires at the nearby state park and lightning. REPI and several partners invested a total of $849,000 in the 2024 REPI Challenge as part of a long-term wildfire mitigation effort in El Paso County’s Wildfire Urban Interface. Efforts for the project will enable the state park to reduce its fuel load, creating a defensible firebreak to project against large wildfires, thereby minimizing the risk of fires starting in this area.
Located in southeastern Arizona, Fort Huachuca is home to premier restricted military airspace for unmanned aircraft system training, as well as the Buffalo Soldier Electronic Test Range and electromagnetic complex, supporting training for personnel across the services. REPI provided $2 million in 2024 to support compatible land use and preemptive actions for extreme drought and wildfire events, one of the greatest threats to the installation’s infrastructure.
- Naval Observatory Flagstaff Station and Camp Navajo [Arizona]
As part of the 2023 REPI Challenge, Camp Navajo and Naval Observatory Flagstaff received $1 million in REPI program funding, coupled with $9.6 million in partner funding, to thin unhealthy forests in the neighboring Coconino County. In Northern Arizona, catastrophic wildfire threatens the Army National Guard’s training mission at Camp Navajo Flagstaff, and the Naval Precision Optical Interferometer at Anderson Mesa, located 20 miles southeast of the Flagstaff naval observatory. Reducing the risk of disastrous wildfires and post-fire flooding will enable flexible execution of the mission and construction of new facilities.
- Pōhakuloa Training Area [Hawaii]
Pōhakuloa Training Area is a joint/combined arms facility that provides logistics, public works and airfield support in furtherance of the U.S. Army Pacific training strategy. In 2024 REPI Challenge, the installation received $1.3 million in REPI funds and another $1.2 million from the state department of land and natural resources to restore 3,300 acres of remnant native forest and pasture lands in the upper elevations of Mauna Kea. The project will have long-term environmental and ecological benefits, including habitat restoration and wildfire mitigation. This is one of 14 projects in Hawaii funded by the REPI Challenge since 2021.