; and (B) an identification of scenarios during which a floating nuclear barge would be preferred over a portable microreactor. 4. Definitions In this Act— (1) Appropriate congressional committees The term appropriate congressional committees means— (A) the Committee on Energy and Commerce, the Committee on Armed Services, the Committee on Oversight and Accountability, and the Committee on Science, Space, and Technology of the House of Representatives; and (B) the Committee on Energy and Natural Resources, the Committee on Armed Services, the Committee on Environment and Public Works, and the Committee on Commerce, Science, and Transportation of the Senate. (2) Local government The term local government has the meaning given such term in section 102 of the Robert T. Stafford Disaster Relief and Emergency Assistance Act ( 42 U.S.C. 5122 ). (3) Microreactor The term microreactor means a nuclear reactor, including a portable nuclear reactor, that has an electricity generating capacity of not more than 20 megawatts of thermal energy. (4) Natural disaster The term natural disaster has the meaning given the term Major disaster in section 102 of the Robert T. Stafford Disaster Relief and Emergency Assistance Act ( 42 U.S.C. 5122 ), except that the term natural disaster does not include a wildfire. (5) Natural disaster response effort The term natural disaster response effort means a circumstance in which a State or local government requests assistance under the Robert T. Stafford Disaster Relief and Emergency Assistance Act ( 42 U.S.C. 5121 et seq. ), including assistance to address the loss of primary electrical capacity as a result of a natural disaster. (6) State The term State means a State of the United States and the District of Columbia.