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Updated September 2, 2021
Presumptive Service Connection: Former Servicemembers of 
Camp Stronghold Freedom at Karshi-Khanabad (K2) Airbase
In recent years, exposure to potentially toxic hazards, like 
environmental health risks and determined that health 
open-air burn pits, has gained congressional attention. In 
effects from the short-term, low-dose exposures present at 
the 117th Congress, the House and Senate Veterans’ Affairs 
K2 were “unlikely.” 
Committees have indicated ongoing interest in examining 
What concerns do former K2 servicemembers and 
the association of illnesses with exposure to certain toxic 
veterans have? 
hazards during military service. Congress has debated 
Former K2 servicemembers and veterans have expressed 
multiple legislative proposals to establish presumptive 
concerns about ongoing or potential health issues or 
service connection for veterans potentially exposed to toxic 
disabilities that may be associated with their service at 
hazards while conducting military operations or while 
Camp Stronghold Freedom. Though the Department of 
stationed at specific military installations. One proposal 
Veterans Affairs (VA) has acknowledged a connection 
specifically includes those formerly stationed at Camp 
between certain respiratory conditions associated with 
Stronghold Freedom and who have since developed certain 
health issues or disabilities. 
service at K2 and other locations, veterans (including those 
with other health conditions) may still believe there could 
What is Camp Stronghold Freedom? 
be challenges with accessing VA health benefits or 
In October 2001, the U.S. military established Camp 
disability compensation. 
Stronghold Freedom at Karshi-Khanabad (K2) Airbase in 
What DOD or VA benefits are available to 
Uzbekistan (see Figure 1). Located on a former Soviet-era 
servicemembers and veterans who served at K2? 
air base, Camp Stronghold Freedom served as an 
Health Benefits. Current servicemembers and military 
intermediate staging base to support logistics and air base 
retirees who served at Camp Stronghold Freedom, and 
requirements for Operation Enduring Freedom and other 
elsewhere, are eligible for health benefits through DOD’s 
military operations in the region. In November 2005, at the 
TRICARE program. Individuals enrolled in a TRICARE 
request of the Government of Uzbekistan, the U.S. military 
health plan may receive care at military treatment facilities  
departed Camp Stronghold Freedom. The Department of 
or from participating civilian health care providers. 
Defense (DOD) estimates 15,767 servicemembers deployed 
Veterans, including military retirees, may be eligible for 
to Camp Stronghold Freedom between 2001 and 2005.  
VA health care if they have documented service-connected 
Figure 1. Karshi-Khanabad Airbase, Uzbekistan 
disabilities, are Medal of Honor or Purple Heart recipients, 
or were exposed to certain toxic substances or 
environmental hazards (e.g., Agent Orange). After VA 
health care eligibility is determined, veterans may formally 
enroll in VA’s health care system to receive services. 
Occasionally, Congress has granted special eligibility for 
health care to those veterans possibly exposed to toxic 
substances and environmental hazards under special 
treatment authorities. For instance, Congress addressed the 
health concerns of Vietnam-era veterans in 1981 with the 
passage of the Veterans’ Health Care, Training, and Small 
Business Loan Act (P.L. 97-72). Similarly,  Congress first 
authorized priority health care for Persian Gulf War 
  veterans with potential, service-related conditions through 
Source: CRS graphic. 
P.L. 103-210  in 1993. Veterans returning from current 
Were harmful or toxic substances present at K2? 
combat theaters of operations may enroll in VA health care 
for five years from the date of their discharge without the 
Between 2001 and 2005, DOD conducted three classified 
need to demonstrate a service-connected disability or 
“occupational and environmental surveys” of K2. 
satisfy a means-test requirement. Veterans eligible under 
Unclassified summaries of these surveys described the 
this condition may be assigned to Priority Group 6 and are 
presence of underground jet-fuel plumes, asbestos-
generally not subject to any VA cost sharing requirements. 
contaminated surface dirt, trace amounts of depleted 
After the five-year period ends, these veterans may be 
uranium, and periodic high levels of dust and other air 
reassigned to a different priority group depending on other 
particulate matter. DOD noted that military officials 
eligibility requirements. 
implemented mitigation efforts (e.g., covering contaminated 
soil and declaring off-limits areas) to reduce the 
https://crsreports.congress.gov 
Presumptive  Service Connection:  Former  Servicemembers  of Camp  Stronghold  Freedom  at Karshi-Khanabad  (K2) Airbase 
Disability Compensation. Veterans with a presumptive or 
consider expanding health care eligibility to K2 veterans 
confirmed service-connected disability may apply for VA 
for certain presumptive service-connected disabilities; 
disability compensation. If a disease or illness is designated, 
and within one year conduct a study of the toxic hazards 
by statute or regulation, as presumptively service-
and servicemember exposures at K2, health 
connected, veterans must only demonstrate they served at a 
consequences of such exposures, and causal links 
specific place and time, and later incurred an illness that is 
between such exposures and identified health 
then presumed to be connected to military service through 
consequences. 
exposure. Veterans need not prove exposure.  
Selected Issues for Congress 
Diseases or conditions with Presumptive Service 
Limited research studies to evaluate potential 
Connection are those “incurred in or aggravated by 
associations between toxic exposures  at K2 and adverse 
service if manifested to a compensable level within the 
health effects. In 2015, the Army Public Health Command 
time frame specified for that certain disease under the 
found that there may be an increased risk of developing 
regulation, even if there is no evidence of such disease 
certain types of cancers among servicemembers who served 
during service.” 
at K2 and indicated that “broader studies to evaluate 
- Department of Veterans Affairs M21-1 IV.i .2.B.2.a. Adjudication 
incidence of cancers following military deployment” would 
Procedures Manual 
be needed. DOD and VA are in the process of developing a 
“much larger and more comprehensive study to evaluate the 
In August 2021, VA began processing disability claims for 
potential associations of K2 deployment on health.” 
newly established service presumptions for asthma, rhinitis, 
Congress could direct or appropriate funds for additional 
and sinusitis. VA is automatically reviewing pending claims 
research to identify sufficient evidence of an association or 
of K2 veterans, among others, with one or more of these 
non-association between exposures at K2 and additional 
conditions and will notify claimants of their decisions. If a 
health outcomes that are currently not presumptions. 
veteran has other health conditions that may be related to 
Consideration of expanding presumptive service 
his or her service at K2, the veteran must establish direct 
connection and impact on spending. Other than VA-
service connection for those conditions in order to be 
authorized presumptions for three respiratory conditions, 
considered for disability compensation. 
there are no other statutory or regulatory presumptive 
Direct service connection refers to an injury or disease 
conditions associated with service at Camp Stronghold. 
incurred or aggravated during military service and 
Congress could consider existing medical evidence and 
documented through relevant medical and lay evidence. 
presumptions associated with possible exposures at K2 to 
Documentation includes the veteran’s service records, type 
determine whether or not sufficient evidence exists to 
of deployments, and the circumstances of service. The 
expand presumptions of service at K2. An expanded list of 
“burden of proof” generally falls on the veteran to 
presumptions would likely require an increase to mandatory 
demonstrate to VA that a direct connection exists between 
spending for VA’s disability compensation fund. In 
his or her condition or illness and exposure to a toxic 
addition, expanding eligibility for VA health care to certain 
hazard. 
veterans who served at K2 may increase VA discretionary 
spending. 
What recent actions have the President or 
Congress taken to address toxic exposures at K2? 
CRS Products 
Several bills were introduced during the 117th Congress, 
CRS In Focus IF10302, Uzbekistan.   
and are still under consideration, that would establish 
certain presumptions for K2 veterans. During the 116th 
CRS Report R44837, Benefits for Service-Disabled  Veterans.   
Congress, the following executive actions and legislative 
CRS Insight IN11724, VA Now Processing  Gulf War Veterans’ 
provisions were enacted: 
Disability  Claims for New Respiratory  Presumptive  Conditions.   
  Veterans Health Care and Benefits Improvement Act 
CRS In Focus IF10555, Introduction  to Veterans Health Care. 
of 2020 (P.L. 116-315). Section 2010 directs the VA 
CRS In Focus IF10530, Defense Primer:  Military  Health System.  
Secretary to enter into an agreement with the Agency for 
 
Toxic Substances and Disease Registry to study and 
report to Congress the incidence of cancer and other 
Other Resources 
diseases of servicemembers who previously served at 
Army  Public Health Command, “Environmental Conditions at 
K2, develop a list of toxic substances or hazards that 
Karshi Khanabad (K-2) Air Base,  Uzbekistan,” accessed March 
such servicemembers may have been exposed to, and 
23, 2021. 
the health consequences of such exposures. 
Jessica M. Sharkey and Joseph H. Abraham, “Evaluation of 
  National Defense Authorization Act for Fiscal Year 
Postdeployment Cancers Among Active  Duty Military 
2021 (P.L. 116-283). Section 751 directs the Defense 
Personnel,”  US Army Medical Department  Journal,  2015. 
Secretary to study and submit a report, within 180 days, 
to Congress on toxic exposures of servicemembers 
 
previously deployed to K2, related health consequences, 
Bryce H. P. Mendez, Analyst in Defense Health Care 
and associations between such exposures and health 
consequences. 
Policy   
  Executive Order 13982—“Care of Veterans with 
Heather M. Salazar, Analyst in Veterans Policy   
Service in Uzbekistan.” Directs the VA Secretary to 
IF11813
https://crsreports.congress.gov 
Presumptive  Service Connection:  Former  Servicemembers  of Camp  Stronghold  Freedom  at Karshi-Khanabad  (K2) Airbase 
 
 
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