of material that could be used in a dirty bomb. (b) Clarification Section 3132(c)(1) of the Ronald W. Reagan National Defense Authorization Act for Fiscal Year 2005 ( 50 U.S.C. 2569(c)(1) ) is amended by adding at the end the following new subparagraph: (N) (i) The collection, storage, and safe disposal of the materials described in clause (ii) as waste materials generated by atomic energy defense activities for the purpose of disposal of such materials at WIPP (as defined in section 2(19) of the Waste Isolation Pilot Plant Land Withdrawal Act ( Public Law 102–579