Wary Washington


Officers with machine guns and bomb-sniffing dogs are patrolling the capital's subway system in the wake of the London bombings. News accounts are quoting a spokesperson for the Department of Homeland Security as saying that it "does not have any intelligence indicating this type of attack is planned in the United States." AP now reports that 40 are known dead in London.

UPDATE: Homeland Secuity has "asked authorities in major cities to increase their vigilance over major transportation systems."