An intermittent disaster-response appointee shall, while acting in the scope of such appointment, be considered to be an employee of the Public Health Service performing medical, surgical, dental, or related functions, and an injury sustained by such an individual shall be deemed “in the performance of duty”, for purposes of chapter
81 of title
5 pertaining to compensation for work injuries. With respect to the participation of individuals appointed under subsection (c) of this section in training programs authorized by the Assistant Secretary for Preparedness and Response or a comparable official of any Federal agency specified in subsection (a)(2)(B) of this section, injuries sustained by such an individual, while acting within the scope of such participation, also shall be deemed “in the performance of duty” for purposes of chapter
81 of title
5 (regardless of whether the individuals receive compensation for such participation). In the event of an injury to such an intermittent disaster-response appointee, the Secretary of Labor shall be responsible for making determinations as to whether the claimant is entitled to compensation or other benefits in accordance with chapter
81 of title
5.