To amend title 38, United States Code, with respect to benefits for veterans who may have been exposed to ionizing radiation during military service, and for other purposes.

[AI summary unavailable — showing source text] Extends the presumption of service-connection, for purposes of eligibility for veterans' benefits and medical care, in the case of exposure to ionizing radiation, to include reserve members exposed to such radiation during active duty training or inactive duty training. Expands the list of diseases presumed to be service-connected in the case of exposure to ionizing radiation to include cancer of the salivary tract and cancer of the urinary tract. Terminates the current presumptive period (the maximum period allowed before manifestation of the illness or disease occurs in order to be presumed to be service-connected and, therefore, covered as a veterans' benefit) of 40 years after participation in the radiation-related activity (30 years in the case of leukemia). Amends the Veterans' Dioxin and Radiation Exposure Compensation Standards Act to direct the Secretary of Veterans Affairs to establish guidelines and standards for the resolution of claims for benefits where a claim is based on a veteran's exposure to ionizing radiation. Directs the Secretary, in consultation with the Secretary of Defense, to identify not less than three activities in which individuals serving on active du…