Agent Orange in the Philippines: How Veterans Can Prove Exposure

Veterans who served at Subic Bay or Clark Air Force Base often remember barrels, cargo, aircraft and chemicals moving through installations that supported the Vietnam War. But decades later they encounter the same problem when they file a VA claim: the Philippines is not a presumptive Agent Orange exposure location.

That means service at Subic Bay or Clark AFB, by itself, does not establish herbicide exposure. But these Agent Orange claims can still succeed. I represented a Marine veteran who had been denied for years before the Board of Veterans’ Appeals granted his diabetes claim. He never served in Vietnam. We won because the evidence showed that his guard duties at Subic Bay placed him in repeated physical contact with leaking drums that the Board accepted as tactical herbicides.

How Can a Veteran Prove Agent Orange Exposure in the Philippines?

VA does not currently recognize Subic Bay, Clark Air Base or another Philippine installation as a location where Agent Orange exposure is automatically presumed. It expects veterans to prove what happened through service records, firsthand statements, buddy evidence and other records that place the veteran close enough to the material for actual exposure to make sense.

VA can research the claimed exposure if the veteran gives VA enough information about the unit, location, dates and duties involved, and how the veteran came into contact with the claimed herbicide, such as handling leaking drums, guarding a storage area or working around contaminated aircraft or parts.

Veterans who served in the Philippines may have several ways to establish herbicide exposure. The strongest claim usually matches the veteran’s actual duty history and service records.

Direct exposure at a Philippine installation is one option. The veteran may be able to show actual contact with herbicides through guard duty, cargo handling, maintenance work or documented assignments. Exposure through contact with contaminated aircraft is a possibility for qualifying Air Force personnel who meet VA’s aircraft, unit and duty requirements.

A veteran may also qualify through documented service in another location where VA presumes herbicide exposure. A sailor stationed through Subic Bay, for example, may have deck logs showing that the ship later operated within qualifying Vietnam waters. Aircrew may have documented duty in Vietnam, Thailand or another covered location.

When the positive and negative evidence are about equal, VA must resolve reasonable doubt in the veteran’s favor. The benefit-of-the-doubt rule can become especially significant in Philippine exposure cases because the record may contain credible firsthand evidence even when official military records are silent.

Once actual herbicide exposure is established, a diagnosis on VA’s Agent Orange presumptive disease list qualifies under the same disease presumption used for veterans with presumed exposure. And even if the claimed condition is not on the presumptive list, VA may still have to consider the claim under the PACT Act’s toxic exposure examination rules and obtain a medical opinion on direct service connection.

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Was Agent Orange Stored at Subic Bay?

Subic Bay has produced some of the strongest direct exposure claims from veterans who served in the Philippines, even though the official tactical herbicide location list does not identify Subic Bay as a documented location where tactical herbicides were tested, used, stored or disposed. VA has relied on records searches showing that command histories were silent about tactical herbicide use, testing, disposal or storage at the naval base.

Veterans have painted a different picture. Their accounts frequently involve drums moving through the Naval Magazine and piers before shipment toward Vietnam, along with security and cargo personnel who handled or worked around those containers.

The Naval Magazine and Piers

Guard duty at the Naval Magazine appears repeatedly in the Subic Bay record. Veterans have described open storage areas containing drums of chemicals, deteriorating containers and spills during loading operations. Security personnel sometimes had to inspect the storage areas, inventory material during shift changes or physically check around containers as part of their duties. Our successful Subic Bay case grew out of this kind of guard duty, including alleged contact with deteriorating, leaking drums.

Other claims have involved cargo and stowage duties rather than security work. In the case No. 1600361 reviewed by the Board of Veterans Appeals, a veteran described loading drums from the Naval Magazine onto trucks and ships. The Board sent it back for additional records development rather than treating the lack of an existing government record as the end of the exposure inquiry.

Cubi Point and Grande Island

Cubi Point also appears in veterans’ accounts involving barrels, aircraft and material moving through the Subic Bay complex. Some veterans have described drums arriving from or departing for Vietnam, while others have alleged broader chemical contamination around work areas.

Cubi Point claims are harder to prove when the evidence only establishes that unidentified chemicals were present. A veteran may be able to describe the container, markings, smell, spill or work performed around it, but identifying the substance as Agent Orange requires additional evidence.

Grande Island and nearby waters also appear in accounts involving the movement or disposal of drums. The available record described in these appeals does not establish a government shipping record confirming Agent Orange at Grande Island, so those allegations remain dependent on firsthand testimony and corroborating evidence.

The New Zealand Evidence

Some Subic Bay veterans have also relied on historical reporting about whether herbicide chemicals moved through the Philippines. In the Subic Bay Agent Orange appeal we won in 2012, the evidence submitted by the veteran included a 2005 ABC News report discussing statements that New Zealand had supplied Agent Orange-related chemicals to the United States through a U.S. base in the Philippines.

The New Zealand material helped give context to the veteran’s testimony and buddy statements, but the historical record is not completely consistent. New Zealand government material released in 2005 described an earlier investigation that found the evidence about Agent Orange production inconclusive. It also reported that material shipped to the United States in 1967 and 1968 was not the type used in Agent Orange or capable of being converted into it.

The veteran’s service records established his duties at Subic Bay, his testimony described direct physical contact, fellow servicemembers corroborated important parts of his account, and the documentary material gave the Board context for evaluating whether tactical herbicides could have passed through the installation.

Exposure at Clark Air Base

Clark Air Base served as a major Air Force logistics, repair and transit hub during the Vietnam War, so Clark claims often look different from the drum-handling cases that come out of Subic Bay. Aircraft, maintenance work, cargo operations and flight-line duties usually form the exposure argument.

One way to establish exposure involves C-123 aircraft that had previously been used to spray herbicides during Operation Ranch Hand. VA has a specific presumption for certain Air Force and Air Force Reserve personnel who regularly operated, maintained or served aboard qualifying contaminated aircraft.

The C-123 Presumption and Its Limitations

This presumption applies only to certain Air Force and Air Force Reserve veterans who had regular contact with contaminated former Operation Ranch Hand aircraft. VA checks the veteran’s unit, dates of service and Air Force specialty against its C-123 records before conceding that presumption.

A 2021 Board decision shows how Clark service can require additional development when the exposure is not obvious from the personnel file. In Citation No. 21070274, the Board sent a Hodgkin’s disease claim back to VA for further research into a jet engine mechanic’s alleged herbicide exposure at Clark AFB, including possible contact with contaminated aircraft and aircraft parts.

Simply working on a base that has contaminated aircraft is not enough. The veteran’s records must show the type of contact VA recognizes under the C-123 rule. In another Board case, an airman assigned to the 405th Civil Engineering Squadron worked in hangars and on ramps where C-123 aircraft were maintained, but the Board did not apply the C-123 presumption to him. He ultimately won service connection under a different direct exposure claim involving herbicide use for weed control.

Dates and aircraft type can also defeat the C-123 presumption. A Clark air freight specialist who served in 1961 and 1962 reported handling leaking barrels, but the Board rejected his exposure theory because his service predated the relevant period and his work involved C-124 and C-130 rather than the qualifying aircraft.

Cargo, Flight-Line and Transit Duty

For veterans who do not fit the C-123 requirements, Clark’s role as a transit and repair hub can still be relevant to a direct exposure claim. Unit histories, Air Force Specialty Codes, maintenance records, performance evaluations and statements from servicemembers in the same work section may help establish what aircraft or cargo the veteran actually handled.

Clark AFB claims need records or credible statements connecting the veteran’s service to the aircraft, cargo, work area or chemical contact tied to the veteran’s own duties. That distinction becomes especially important when official records do not independently confirm herbicide exposure.

What Evidence Helps Prove a Philippines Agent Orange Claim?

• A detailed veteran statement describing the location, dates, duties, containers or aircraft involved, frequency of contact and how the substance reached the veteran’s skin, clothing or work area.
• Buddy statements from people with firsthand knowledge, preferably from the same unit and period. A witness can submit the statement on VA Form 21-10210, Lay/Witness Statement.
• Personnel records showing the installation, unit, military occupation and duty assignment.
• Performance evaluations, duty rosters or temporary-duty orders that place the veteran in the specific job connected to the exposure.
• Ship deck logs and command histories when naval movements or port calls form part of the claim.
• Photographs, letters or other contemporary records that help place the veteran at the claimed location or duty.
• Medical records confirming the current diagnosis.
• A medical opinion when direct service connection requires one, especially for a condition that does not qualify under the Agent Orange presumptive disease list.

VA needs enough detail to research the exposure claim. Veterans should identify the unit, location, approximate dates and what happened rather than asking VA to search broadly for Agent Orange in the Philippines. VA generally researches land-based herbicide exposure in blocks of up to 120 days. Veterans who were exposed over a longer period should identify the dates as closely as possible so VA can research each relevant period.

Veterans should describe what they actually remember seeing and doing. A veteran does not need to identify the chemical by sight decades later. Details such as drum markings, leaks, spills, odors, stained clothing, work areas and how often the contact occurred can help VA compare the statement with military records.

How Often Does the Board Grant These Claims?

Hill & Ponton analyzed Board of Veterans’ Appeals decisions from 2021 through 2025 involving a claim of Agent Orange exposure in the Philippines. More than half of the issues were remanded for additional development, often because VA still needed exposure research, personnel records, C-123 development, a toxic exposure review or another medical opinion.

Source: Hill & Ponton analysis of the Board of Veterans’ Appeals 2021 to 2025 decisions, limited to issues involving a Philippine Agent Orange exposure claim.

Only 284 of the 587 issues reached a clear grant or denial. Among the issues the Board actually decided, denials occurred roughly twice as often as grants.

What Separated the Grants from the Denials?

The grants Hill & Ponton analyzed usually involved records showing where the veteran served, records showing the veteran’s job, a detailed description of the exposure, and supporting statements or records that matched that account.

Denials were more common when the claim relied only on general articles about chemicals in the Philippines, unidentified barrels, proximity to aircraft or medical opinions that assumed Agent Orange exposure without first proving it. The Board also denied claims when service dates conflicted with the claimed exposure or official records produced negative findings that the veteran’s evidence could not overcome.

The Subic Bay Agent Orange Case Hill & Ponton Won

Hill & Ponton’s 2012 Subic Bay case shows the kind of proof that can overcome a lack of official records confirming Agent Orange at the base. The Marine veteran I represented served on active duty from 1970 to 1973 and was stationed at Subic Bay in 1971. His personnel records showed that he served as a guard with the Marine Barracks Security Guard Company. His duties placed him around weapons and ammunition being prepared for shipment to Vietnam.

VA had already denied his diabetes claim in December 2002. He challenged the decision, but the appeal did not reach a final Board decision at that time. Nearly a decade later, the Board reopened the claim after submission of new evidence.

The veteran gave a detailed account of barrels stored around the area he guarded. He described deteriorating drums with orange markings, warning signs on nearby storage areas and liquid leaking from some containers. His security duties required him to check around and physically touch the barrels, and he said the leaking material got onto guards’ hands and uniforms.

This was corroborated by a fellow guard who served with him. He testified about chemical drums stored in the area and described inventorying them during shift changes. Other servicemembers provided statements about barrels transported through Subic Bay and spills aboard ships moving between the Philippines and Vietnam.

We also submitted documentary material that gave the veteran’s account additional context, including a news report concerning historical claims that Agent Orange-related chemicals had moved through a U.S. base in the Philippines.

The Board of Veterans’ Appeals found that lack of official records did not establish that tactical herbicides had never been temporarily stored at Subic Bay. Looking at the complete record, it concluded that the veteran was “as likely as not exposed to tactical herbicides” during his duties, which meant his diabetes qualified for presumptive service connection. The Board granted service connection in Citation No. 1227509, decided Aug. 9, 2012.

Do Blue Water Navy Port Calls at Subic Bay Count?

A port call at Subic Bay does not place a sailor within the Blue Water Navy exposure area by itself. The Blue Water Navy presumption covers service offshore of Vietnam, in waters within 12 nautical miles of the statutory demarcation line. Subic Bay sits outside that area. However, a sailor who stopped at Subic Bay may still qualify through the ship’s movements elsewhere.

Deck logs can show whether a vessel later entered qualifying waters off Vietnam, and those records can create a separate presumptive exposure basis. For a veteran whose only claimed herbicide exposure occurred at Subic Bay, the claim remains a direct exposure case.

In Citation No. 1803137, a case involving a veteran who went ashore at Subic Bay for rest and recuperation, the Board of Veterans’ Appeals remanded the exposure issue after finding that VA’s prior records search covered the wrong period. Even a short period ashore can require additional development when the veteran provides enough information to identify when and where the alleged exposure occurred.

Why Are Philippines Agent Orange Claims Denied?

• Service records show the base but not the exposure. Personnel records may prove service at Subic Bay or Clark without showing what the veteran handled or where the veteran worked. Performance reports, duty descriptions, buddy statements, photographs and unit records can help fill in those details.
• The C-123 requirements are not met. VA will look at the veteran’s unit, dates, aircraft and Air Force specialty. Veterans who do not meet the C-123 presumption may still pursue direct exposure if other evidence supports it.
• The exposure account lacks enough detail to verify it. A late statement is not automatically unreliable, but VA may question credibility when dates, units or duties change over time. Veterans can strengthen the account by anchoring it to service records, known assignments, work locations and other facts that can still be confirmed.
• Official records come back negative or silent. A search covering the wrong year, wrong unit or too limited a location may leave relevant records untouched. A negative or silent records search does not always resolve the exposure question, especially when the search did not address the veteran’s specific service period or duties.
• The medical opinion assumes exposure instead of proving it. A doctor can explain whether a disease is medically related to a chemical exposure, but the claim still needs records or credible statements showing that the veteran encountered the substance during service.

What Are the Appeal Options after a Philippines Agent Orange Denial?

The best appeal option depends on why VA denied the claim and whether the veteran has new evidence.

Can a Surviving Spouse Appeal a Philippines Agent Orange Claim?

A surviving spouse may pursue Dependency and Indemnity Compensation when a service-connected disability caused or materially contributed to the veteran’s death. The claim can be harder to prove if the veteran never documented the Philippines exposure during life. Earlier claim statements, letters, recorded interviews, personnel records, photographs and statements from fellow servicemembers can become especially important.

Hill & Ponton’s Board analysis identified 12 cause-of-death or DIC issues involving a Philippine Agent Orange theory. None were granted, while two-thirds were denied and the remainder were remanded. The small sample does not predict an individual survivor’s outcome, but it shows how difficult these cases become when the original exposure story was never fully documented during the veteran’s lifetime.

Get Help with a Philippines Agent Orange Claim

Philippines cases often require a detailed reconstruction of the veteran’s service and exposure evidence. Missing unit records, disputed duties or incomplete exposure development can become central issues on appeal.

At Hill & Ponton, we’ve successfully represented veterans in Agent Orange-related appeals for decades. If VA denied your claim, questioned the exposure evidence or failed to fully develop service records, contact us for a free case evaluation to explore your legal options. We charge nothing until we win the case.