Trayvon Martin went out to buy some Skittles -- and was shot dead before he made it home. The case is horrifying, maddening, grotesque. And -- perhaps worst of all -- there may be nothing Florida law enforcement can do about it.
One freight train rear-ended another Friday afternoon, sending debris into a passing third train, authorities in Porter County, Indiana, said. Firefighters put out flames among the jumble of derailed cars.
Terrorist groups, anarchists and other political extremists are the most obvious potential security threats to the royal wedding on Friday, but the most potent danger comes from obsessive lone operators, say experts.