Yellow or Orange -- Whatever That Means

In light of the London bombings, the Homeland Security Department's "rainbow of doom" is staying put at "yellow" -- where it's been since November 10, 2004. But Homeland Security Secretary Michael Chertoff says it's being raised to "orange" for America's transportation systems:

"We have been in direct communication with officials at the state and local level and with public and private sector transportation officials. We have asked them for increased vigilance and additional security measures for major transit systems."