http://www.nytimes.com/2005/07/25/national/nationalspecial3/25bombings.html?th&emc=th
Sarah Kershaw
"Across the country, police departments large and small are preparing for a possibility once thought improbable and now feared to be inevitable. The day of four attempted explosions in the London subways, the New York City police began randomly searching bags and backpacks at subway stations and other travel hubs."
