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Desert at sunset.
Sonoran Desert Federal agencies are working to protect 1.68 million acres in the Sonoran Desert in Arizona through the Sentinel Landscapes Partnership. © Jim Malusa
Land & Water Stories

Partnering with an Unlikely Bedfellow—the Military—to Conserve Natural Resources

In Fort Huachuca, Ariz., aircrafts take off from the United States Armed Forces’ 81,723-acre testing and training area, then swoop over the surrounding Sonoran Desert. The quietness of the natural landscape is a benefit to the Army’s electromagnetic testing operations that take place there, given that the testing can be disrupted by ambient noise.

That is why several federal agencies and other entities are working together, via the Sentinel Landscapes Partnership, to help ensure that 2.2 million acres of this landscape are protected—and, therefore, quiet.

Fort Huachuca is the anchor military installation in a network of natural areas and working landscapes around military installations that have been designated by the partnership as "sentinel landscapes." They are places where federal and state agencies, nongovernmental organizations, landowners and land managers work together to advance sustainable land use practices.

Trees and mountains.
Fort Huachuca Located in southeastern Arizona, Fort Huachuca is the home of the U.S Army Intelligence Center of Excellence and the Network Enterprise Technology Command. As a Major Range Test Facility Base, Fort Huachuca is a hub of electromagnetic technology testing and training.
Aerial image of cows in grassland.
Sentinel Landscapes A group of partners came together to form the Fort Huachuca Sentinel Landscape in 2015. The primary goal of this landscape is to build resilience through collaborative, community-driven strategies in order to tackle issues such as water conservation, agricultural viability, wildlife habitat restoration and military mission protection. © Eric Bendick
Fort Huachuca Located in southeastern Arizona, Fort Huachuca is the home of the U.S Army Intelligence Center of Excellence and the Network Enterprise Technology Command. As a Major Range Test Facility Base, Fort Huachuca is a hub of electromagnetic technology testing and training.
Sentinel Landscapes A group of partners came together to form the Fort Huachuca Sentinel Landscape in 2015. The primary goal of this landscape is to build resilience through collaborative, community-driven strategies in order to tackle issues such as water conservation, agricultural viability, wildlife habitat restoration and military mission protection. © Eric Bendick
Great salt lake.
Christoff-Michael_Great-Salt-Lake Large storm rolling up to Great Salt Lake Flats near Wendover, Utah. © Michael Christoff

A Shift Toward Comprehensive Stewardship

The Sentinel Landscape Partnership is an outgrowth of a Congressionally authorized program created in 2003—the Readiness and Environmental Protection Integration program. Through the program, the Department of Defense works with landowners and partners to protect working lands and natural areas that are near military installations or airspace. The projects may involve nature-based solutions that strengthen the resilience of military installations to extreme weather and other impacts of a changing climate. The program is successful but tends to result in an incomplete mosaic of protection, instead of the comprehensive landscape-level stewardship needed for these areas to thrive. TNC was a key partner in evaluating whether the program is effective in achieving its goals. 

The U.S. Department of Agriculture, Department of Defense and Department of the Interior created the Sentinel Landscapes Partnership in 2013, with input from The Nature Conservancy and others. They did so because they knew that these natural areas and working landscapes could provide multiple benefits to advance the aims of many stakeholders but would need concerted cooperation and funding to continue doing so. Benefits include strengthened military readiness, conservation of natural resources, stronger agricultural and forestry economies, increased public access to outdoor recreation and increased resilience to the impacts of a changing climate.

There are 18 designated sentinel landscapes, covering a total of more than 50 million acres, in the continental U.S. and Hawaii. More are being planned. All contain at least one high-value military installation or range, as well as lands that are a high priority for the participating federal agencies. TNC is a partner in 15 of the sentinel landscapes. Other federal agencies, such as the Federal Emergency Management Agency and the National Oceanic and Atmospheric Agency, are seeking to become partners.

“The key to the success of the partnership is its collaborative stakeholder approach that delivers  multiple co-benefits as a result of the land management and stewardship actions taken,” says Bob Barnes, a senior policy advisor for TNC and a retired Brigadier General, U.S. Army. He provided input to the Department of Defense on the creation of the partnership.

“Anyone who supports farmers, ranchers and foresters should support this partnership,” he says. “Anyone who’s a supporter of voluntary actions to preserve natural areas and habitat should support it. Anyone who’s a supporter of military readiness and the Department of Defense should support it.”

Connecting a Sentinel Landscape (5:58) Avon Park Air Force Range, the nation's 4th sentinel landscape, shows how federal agencies, governments and NGOs work with willing landowners and land managers to maintain working lands and protect nature and wildlife habitats for endangered species like the Grasshopper Sparrow.
Long leaf pine tree in grasses.
MAG22002 - Longleaf Pine As of May 2024, there are 18 landscapes across the United States designated as Sentinel Landscapes, including 11 million acres in eastern North Carolina which helps protect endangered long leaf pine forests. © Andrew Kornylak

Sentinel Landscapes Partnership

Learn how this program is advancing sustainable land use practices around military ranges.

Learn More

Along with these management approaches, the success of the partnership also depends on local leadership by designated full-time and fully-funded coordinators in each landscape.

Conserving Our Most Vital Landscapes

TNC has worked with the U.S. military since the 1970s, as we recognize its influence as a natural land steward and its ability to advance land management priorities at scale. Other federal agencies, such as the Department of Agriculture and Department of Interior, also have a strong interest in using the nation’s natural and working lands wisely and can bring resources to bear in the process of managing them.

Together, we are advancing vital progress in conserving some of our nation’s most important—and strategic—natural and working landscapes through this partnership. Partnerships like this, in the U.S. and around the world, are essential to reaching TNC’s 2030 goals.

Mountains and desert at sunset.
Southern Huachuca Mountains The southern Huachuca Mountains in Arizona are also known as the "Sky Islands." © Adriel Heisey

Fort Huachuca Sentinel Landscape Documentary

In 2015, a group of partners formed the Fort Huachuca Sentinel Landscape Partnership. Located in southeastern Arizona, the partnership's purpose is to build resilience through collaborative community-driven strategies that preserve and enhance key landscapes and habitats, support working lands including local farms, ranches and forests and protect the testing and training missions at Fort Huachuca. Watch the Fort Huachuca Sentinel Landscape documentary to learn more about this unique sentinel landscape.