The Marine Corps Air Station Miramar Fire Department hauled in 471 female Spanish Boer goats from California's Central Valley and released them into an approximately 600-acre area of parched scrub at Camp Elliott just east of Highway 15 earlier this month. It's the first time any U.S. military base has attempted this on a large scale and fire chief Joshua Allen has said the concept languished on the shelf for most of the past decade before finally being approved.

The goats, which are handled every day, and shepherded by dogs and portable electric fence from a Central Valley operation, Shepherdess Land and Livestock, will allow them to trample and strip brush that was allowed to dry all summer into kindling. “Five hundred goats eating through old dead vegetation can do two things at once eat it and crush it into the ground to rot it down rather than posing a fire hazard,” says Cole Bush, the operation's manager.

It might sound like the words of a Sonoma County highway crew, a Laguna Beach parks department or the Ventura County Fire Department, all of whom have been relying on grazing herds for years. The arithmetic has changed, though. This year, targeted grazing has started to look like a program that people like to do, it's become a real budget line and it's become a real budget stress. Miramar's pilot lands are in the middle of it.

Begin at the end of the deal, at the goat's output. The researchers at the University of California Agriculture and Natural Resources (UC ANR) reported that vegetation loads decreased from an average of approximately 3,159 pounds per acre to an average of 1,220 pounds after the herd has passed, a drop of over 50 percent, with the remaining vegetation being flattened and less likely to carry flame at speed. The fire department in Laguna Beach, which has implemented a grazing program since a fire in the area more than 400 homes, estimates it costs about 10% as much as hand crews, who charge about 100 per acre.

In other cities managed programs have estimated the cost at $500 to $1500 per acre, and one herd of 200 goats could clear an acre a day. The county of Ventura manages to spend around $935 per acre at its Ojai and Reagan Library locations. Goats can be the least invasive of a series of fuel-reduction alternatives (mechanical mastication or herbicide spraying, and hand crews with chainsaws on terrain that is too steep or too remote to access safely), and they leave behind nothing but manure, which is a fertiliser and not a fuel.

That's the cost advantage that is now under threat. In a provision called SB 143, California briefly employed the same monthly wage structure for goat herders that is used for sheepherders and treated them as being essentially on call every minute of the day, instead of paid by the hour. That parity had a sunset clause that expired on June 30 of this year, without a Sacramento renewal.

Figures published by the state's own Department of Industrial Relations and shared by a coalition of over thirty state legislators in a letter to Governor Newsom in August show that the state's default calculation of an on-duty herder would come out to about $4,938 a month, or nearly $240,000 a year once housing, food and phone service are included. If a contractor has a hundred to a thousand animals each on a few dozen properties and only a few herders, this is not a marginal cost adjustment, this is the number that can kill a grazing operation right in the middle of the fire season.

The stakes are much more than the goats. The CAL FIRE re-drawn 2025 and first full update of the state's fire hazard severity maps added 1.4 million acres to high-hazard zones, impacting building codes, defensible space requirements and insurance underwriting for homes that are now under the new lines. The insurance of last resort, California's FAIR Plan, has stepped in to insure over 680,000 California homes and businesses now on the list of wildfire-risk areas where private carriers have backed off and not priced the risk.

That retreat has become the basis for a new generation of climate-focused underwriters to make a new play: that is, to remain in the market, not with a blanket, zip-code-based risk assessment, but with a more sophisticated approach to developing a model that incorporates granular, property-based risk assessments.That retreat has become the foundation for a new generation of climate-focused underwriters to make a new play: that is, to stay in the market, not with a blanket, zip-code-based risk assessment, but with a more sophisticated approach to developing a model that incorporates granular, property-based risk assessments and documented mitigation efforts, which should lead to better rates, not ignored. Viewed from that perspective, a fuel break established by goats is not a novelty: it's just the kind of mitigation that can be measured and is cheap enough to make a neighbourhood insurable at all.

California has reacted to this with funds, if not laws. In 2024, SB 675 was signed into law, which officially permits prescribed grazing as one of the activities that can qualify for CAL FIRE's wildfire prevention grants. More recently, funding rounds have included up to $950,000 for multi-year community projects for prescribed grazing. Independent communities from Nevada City, where the goat herd was funded by a crowd-funder initiative to get it up and running because they felt they couldn't wait for grant cycles, to San Diego Gas & Electric, where goats patrol the transmission corridors, have come to the same conclusion: a few hundred goats, moved every day and fenced carefully, can do in weeks what costs multiples more and takes much longer.