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We must be prepared for the answer to be , " not that much more . Given that RTCP traffic can be encrypted by the end hosts , autonomous systems must be prepared for the fact that certain aspects of their network topology can be revealed . " Today , our commanders made it clear , " he said after a meeting on Iraq with senior military officers , " as Iraqis prepare to vote on their constitution in October and elect a permanent government in December , we must be prepared for more violence . Upon arrival , they were forced to surrender their cell phones , and were told they would be using one pool camera and that news of what was a transition ceremony would be embargoed for two hours . Some substitutions might be allowed for individuals having exceptional strengths in chemistry , physics , mathematics , etc ., but even these persons I think should qualify at the introductory textbook level . In this case , some detailed planning will be called for if family objectives and goals are to be achieved . A tympanomastoidectomy may be required for otologic complications and lymph node excision may be indicated for chronically draining , fluctuant nodes .