Traditionally, firefighting is deemed a profession anchored on visible dangers, such as raging infernos, structural collapse, and urgent rescue operations that demand swift action. However, over the past two decades, an alarming trend has unfolded in the country’s fire service, becoming increasingly difficult to overlook over time. Such an evolving reality is, in fact, reflected in mounting evidence: national records indicate that cancer has emerged as the leading cause of line-of-duty fatalities among career personnel, with the majority—or 66%—of the group succumbing to this catastrophic disease from 2002 to 2019. For nearly 200 fire departments in South Texas, including those in McAllen and Hidalgo County, these figures are not merely statistics but a manifestation of a growing concern that extends even to active, former, and retired military firefighters in the region. Addressing it requires more than acknowledgment; it calls for a clearer understanding of how the problem’s very root—specifically prolonged toxic exposure—shapes long-term health outcomes. In light of this, the National Firefighter Registry for Cancer strongly serves as a crucial tool as it offers a structured means to capture relevant data and translate it into insights that can better protect firefighters over the course of their careers. But ultimately, its significance hinges on whether first responders in the region choose to take part, ensuring that their experiences are neither sidelined nor underestimated.
The dangers associated with firefighting do not really end when the scene is cleared. In many cases, the more consequential risks are those that accumulate gradually, and they are most likely driven by repeated contact with hazardous substances encountered during routine operations. For instance, fires at homes, vehicles, industrial sites, or any infrastructure can discharge a complex mix of harmful pollutants such as volatile and semi-volatile organic compounds, polycyclic aromatic hydrocarbons, polychlorinated biphenyls, lead, radiation, heavy metals, and numerous other fine particulates. These substances can enter the body through inhalation, consumption, or skin absorption—pathways that are not always fully mitigated even with standard protective measures in place. And while these issues are prevalent anywhere in the country, they sound an alarm in South Texas, especially since the region’s landscape spans high-traffic roadways, oil transport routes, and rapidly expanding commercial zones. This means thousands of its firefighters also often respond to incidents involving vehicle collisions, fuel-fed fires, and structures built with old and modern synthetic materials—all of which can intensify the toxicity of smoke and debris released.
For personnel enlisted in the armed forces, the range of potential exposures can be even more extensive and complex, mainly due to the unique risks associated with their environments. Shipboard fires, in particular, can combust dangerous materials like asbestos insulation, fuels, lubricants, solvents, and other chemical-laden components commonly found in confined quarters of vessels. Consequently, those responding to these emergencies may be exposed to hazardous substances in high concentrations—often without immediate awareness of the long-term implications that may follow later. In addition, training and suppression activities in the military have also historically relied on specialized tools designed for high-intensity fuel fires, most notably aqueous film-forming foam (AFFF). Although effective operationally, many of these foams contain per- and polyfluoroalkyl substances (PFAS), which are notorious for their persistence in both the environment and the human body. And because these synthetic chemicals have already been employed for generations, they have likewise contributed to pervasive contamination across more than 700 installations nationwide—including Naval Air Station Kingsville—raising ongoing concerns about prolonged exposure.
Efforts to better understand cancer risk in the fire service apparently point to one conclusion: without comprehensive data, even the most pressing occupational hazards remain difficult to address. Heeding the urgent need to tackle this critical fact, the federal government decisively created the National Firefighter Registry for Cancer—authorized under a 2018 federal legislation and implemented by the Centers for Disease Control & Prevention (CDC) beginning in 2023. By compiling detailed service records as well as exposure data and health outcomes of firefighters—regardless of whether they are diagnosed with malignancies—this new database enables researchers to identify patterns that can inform stronger protections, improved safety standards, and more effective long-term monitoring.
More than setting precautionary measures, the impact of this initiative also extends to more reasonable policymaking. And such will be especially pronounced in how service-related illnesses are acknowledged under federal law. While some conditions are now granted presumptive status through the Honoring Our PACT Act—making it easier for veterans to access healthcare and compensation—others linked to emerging hazards such as PFAS are still left out. In these circumstances, victims shoulder the burden of proof, establishing a direct connection between their ailments and prior active duty. However, with the recently enforced platform, lawmakers will have more methodical pathways to strengthen the evidentiary foundation needed to reassess these long-standing gaps in recognition.
At present, the National Firefighter Registry for Cancer continues to gain momentum with the participation of firefighters across the country. In fact, as of April 10, 2026, nearly 47,200 individuals—including more than 1,900 Texans—have already registered successfully. But though such figures have indeed marked a meaningful start, they only represent a modest share of a workforce that exceeds one million. And bridging this gap requires increased participation. The enrollment process is straightforward and can even be completed online in just minutes, yet its effects are significant and lasting. For firefighters in South Texas and beyond, joining this registry is more than just a formality—it is a vital step toward ensuring their risks are acknowledged and their health is safeguarded for the future.
Editor's Notre: The above guest column was penned by Cristina Johnson, a veteran advocate at the Asbestos Ships Organization, a nonprofit that raises awareness of veterans’ exposure to toxic substances. The column appears in the Rio Grande Guardian with the permission of the author.
