U.S. airports began tightening security Saturday after the second incident in two days in Britain, although officials said there were no plans to raise the color-coded terrorism threat level.
“‘At this point, I have seen no specific, credible information suggesting that this latest incident is connected to a threat to the homeland,'” Homeland Security Secretary Michael Chertoff said in a written statement.
“‘We have no plans at this time to change the national threat level.'”
Chertoff noted that U.S. airports have been operating under an elevated “orange” threat status since last fall.
source: LA Times