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b2 b7UF To: WMD Directorate From: Washington Field Re: 279A-WF-222936-USAMRIID, 11/06/2006 Details: On 11/10/2006, the Washington Field Office (WFO) AMERITHRAX Task Force, with the assistance from the Hazardous Materials Response Unit (HMRU) and the WFO Hazardous Materials Response Team (HMRT), will conduct a search_of Bio-Safety Level 3 — laboratory suites at USAMRIID. TheL_|s i ocated in building and are designated suitest The purpose of the search is to collect 1) non-anthracis species of Bacillus isolates currently located inl] 2) aliquots from samples of Renocal/Hypaque located in room of the suite, and 3) general evidence to include notes, envelopes, paper envelope bands, tape, items with pieces of tape, and documents that may be evidence of involvement in the anthrax mailings. It is anticipated that this search will be conducted ursuant to consent. Consent ill be requested from eee USAMRIID on Thursday November. 9, 2006. In the event that consent is denied, the search will proceed under the authority of a previously obtained search warrant issued in the District of Columbia. Application for the warrant will be presented to the U.S. District Court, Washington D.C. on November 7, 2006. All search personnel will be advised of the authority (consent or warrant) by which the search is to proceed. Background Bacillus subtilis The anthrax spore powder recovered from the anthrax evvelopes addressed to the New York Post and Tom Brokaw contains low levels of a bacterial contaminant identified as a strain of Bacillus subtilis. The Bacillus subtilis contaminant has not been detected in the anthrax spore powder recovered from the envelopes mailed to either Senators Leahy or Daschle. Bacillus subtilis is a non-pathogenic bacterium found ubiquitously in the environment. However, genomic DNA sequencing of the specific isolate of Bacillus subtilis discovered within the New York Post and Tom Brokaw anthrax powders reveals that it is genetically distinct from over seventy (70) isolates of Bacillus subtilis tested to date. Analysis of the Bacillus subtilis from the New York Post and Tom Brokaw envelopes revealed that these two isolates are identical. . RMR-1029 USAMRIID is a military research institute located on the base of Fort Detrick in Frederick, Maryland. Prior to the anthrax attacks in the fall of 2001, USAMRIID was one of sixteen (16) U.S. laboratories which possessed the Ames strain of Ba which was used in the attacks. Genetic analyses conducted by the AMERITHRAX investigation, with the assistance of several contract