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April 21, 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. It is possible that Congress 
Former K2 servicemembers and veterans have expressed 
may debate 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. Since neither Congress nor the 
stationed at specific military installations. One in particular 
Department of Veterans Affairs (VA) has authorized 
includes those formerly stationed at Camp Stronghold 
presumptive or direct service connection for service at K2, 
Freedom and who have since developed certain health 
veterans may have perceived challenges with accessing VA 
issues or disabilities. 
health benefits or disability compensation. 
What is Camp Stronghold Freedom? 
What DOD or VA benefits are available to 
In October 2001, the U.S. military established Camp 
servicemembers and veterans who served at K2? 
Stronghold Freedom at Karshi-Khanabad (K2) Airbase in 
Health Benefits. Current servicemembers and military 
Uzbekistan (see Figure 1). Located on a former Soviet-era 
retirees who served at Camp Stronghold Freedom, and 
air base, Camp Stronghold Freedom served as an 
elsewhere, are eligible for health benefits through DOD’s 
intermediate staging base to support logistics and air base 
TRICARE program. Individuals enrolled in a TRICARE 
requirements for Operation Enduring Freedom and other 
health plan may receive care at military treatment facilities 
military operations in the region. In November 2005, at the 
or from participating civilian health care providers. 
request of the Government of Uzbekistan, the U.S. military 
Veterans, including military retirees, may be eligible for 
departed Camp Stronghold Freedom. The Department of 
VA health care if they have documented service-connected 
Defense (DOD) estimates 15,767 servicemembers deployed 
disabilities, are Medal of Honor or Purple Heart recipients, 
to Camp Stronghold Freedom between 2001 and 2005.  
or were exposed to certain toxic substances or 
Figure 1. Karshi-Khanabad Airbase, Uzbekistan 
environmental hazards (e.g., Agent Orange). After VA 
health care eligibility has been 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 
  P.L. 103-210 in 1993. Veterans returning from current 
Source: CRS graphic. 
combat theaters of operations may enroll in VA health care 
for five years from the date of their discharge without the 
Were harmful or toxic substances present at K2? 
need to demonstrate a service-connected disability or 
Between 2001 and 2005, DOD conducted three classified 
satisfy a means-test requirement. Veterans eligible under 
“occupational and environmental surveys” of K2. 
this condition may be assigned to Priority Group 6 and are 
Unclassified summaries of these surveys described the 
generally not subject to any VA cost sharing requirements. 
presence of underground jet-fuel plumes, asbestos-
After the five-year period ends, these veterans may be 
contaminated surface dirt, trace amounts of depleted 
reassigned to a different priority group depending on other 
uranium, periodic high levels of dust and other air 
eligibility requirements. 
particulate matter. DOD noted that military officials 
implemented mitigation efforts (e.g., covering contaminated 
Disability Compensation. Veterans with a presumptive or 
soil and declaring off-limits areas) to reduce the 
confirmed service-connected disability may apply for VA 
https://crsreports.congress.gov 
Presumptive Service Connection: Former Servicemembers of Camp Stronghold Freedom at Karshi-Khanabad (K2) Airbase 
disability compensation. If a disease or illness is designated, 
Selected Issues for Congress 
by statute or regulation, as presumptively service-
Consideration of Establishing Presumptive Service 
connected, veterans must only demonstrate they served at a 
Connection. Currently there are no statutory nor regulatory 
specific place and time, and later incurred an illness that is 
presumptive conditions associated with service at Camp 
then presumed to be connected to military service through 
Stronghold Freedom. Congress could consider existing 
exposure. Veterans need not prove exposure. Currently, 
medical evidence and presumptions associated with similar 
there is no presumption for health conditions associated 
toxic exposures seen at K2 to determine whether or not 
with service at K2. Veterans with a health condition that 
sufficient evidence exists to establish presumption of 
may be related to their service at K2 must establish direct 
service at K2. Such a presumption would require an 
service connection in order to be considered for disability 
increase to mandatory spending for VA’s disability 
compensation.  
compensation fund. Finally if Congress considers granting 
presumption, it is important to note that this would counter 
Diseases or conditions with Presumptive Service 
VA’s current stance that the scientific support “is not there 
Connection are those “incurred in or aggravated by 
at this time” to establish a service presumption (as stated in 
service if manifested to a compensable level within the 
a November 2020 House Committee on Oversight and 
time frame specified for that certain disease under the 
Government Reform hearing on toxic exposures at K2).  
regulation, even if there is no evidence of such disease 
during service.” 
Limited research studies to evaluate potential 
- Department of Veterans Affairs M21-1 IV.ii.2.B.2.a. Adjudication 
associations between toxic exposures at K2 and adverse 
Procedures Manual 
health effects. In 2015, the Army Public Health Command 
found that there may be an increased risk of developing 
Direct service connection refers to an injury or disease 
certain types of cancers among servicemembers who served 
incurred or aggravated during military service and 
at K2 and indicated that “broader studies to evaluate 
documented through relevant medical and lay evidence. 
incidence of cancers following military deployment” would 
Documentation includes the veteran’s service records, type 
be needed. DOD and VA are in the process of developing a 
of deployments, and the circumstances of service. The 
“much larger and more comprehensive study to evaluate the 
“burden of proof” generally falls on the veteran to 
potential associations of K2 deployment on health.” 
demonstrate to VA that a direct connection exists between 
Congress could direct or appropriate funds for additional 
his or her condition or illness and exposure to a toxic 
research to identify sufficient evidence of an association or 
hazard. 
non-association between exposures at K2 and health 
outcomes. 
What recent actions have the President or 
Congress taken to address toxic exposures at K2? 
Expanded benefits may impact discretionary and 
In addition to congressional lines of inquiry with DOD and 
mandatory spending. As noted above, a new presumption 
VA, congressional hearings, and several bills introduced 
would require an increase to VA’s mandatory spending for 
during the 116th Congress, the following are recently 
disability compensation. In addition, expanding eligibility 
enacted executive actions and legislative provisions: 
for VA health care or other disability benefits to certain 
veterans who served at K2 may increase VA discretionary 
  Veterans Health Care and Benefits Improvement Act 
and mandatory spending.  
of 2020 (P.L. 116-315). Section 2010 directs the VA 
Secretary to enter into an agreement with the Agency for 
CRS Products 
Toxic Substances and Disease Registry to study and 
CRS In Focus IF10302, Uzbekistan, by Maria A. Blackwood 
report to Congress the incidence of cancer and other 
diseases of servicemembers who previously served at 
CRS Report R44837, Benefits for Service-Disabled Veterans, 
K2, develop a list of toxic substances or hazards that 
coordinated by Heather M. Salazar  
such servicemembers may have been exposed to, and 
CRS In Focus IF10555, Introduction to Veterans Health Care, by 
the health consequences of such exposures. 
Sidath Viranga Panangala and Jared S. Sussman  
  National Defense Authorization Act for Fiscal Year 
CRS In Focus IF10530, Defense Primer: Military Health System, 
2021 (P.L. 116-283). Section 751 directs the Defense 
by Bryce H. P. Mendez  
Secretary to study and submit a report, within 180 days, 
to Congress on toxic exposures of servicemembers 
Other Resources 
previously deployed to K2, related health consequences, 
Army Public Health Command Factsheet “Environmental 
and associations between such exposures and health 
Conditions at Karshi Khanabad (K-2) Air Base, Uzbekistan,” 
consequences. 
accessed March 23, 2021 
  Executive Order 13982—“Care of Veterans with 
Jessica M. Sharkey and Joseph H. Abraham, “Evaluation of 
Service in Uzbekistan.” Directs the VA Secretary to 
Postdeployment Cancers Among Active Duty Military 
consider expanding health care eligibility to K2 veterans 
Personnel,” US Army Medical Department Journal, 2015 
for certain presumptive service-connected disabilities; 
and within one year conduct a study of the toxic hazards 
 
and servicemember exposures at K2, health 
consequences of such exposures, and causal links 
Bryce H. P. Mendez, Analyst in Defense Health Care 
between such exposures and identified health 
Policy   
consequences. 
Heather M. Salazar, Analyst in Veterans Policy   
IF11813
https://crsreports.congress.gov 
Presumptive Service Connection: Former Servicemembers of Camp Stronghold Freedom at Karshi-Khanabad (K2) Airbase 
 
 
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