Nevertheless, the administration has maintained the government's color-coded terrorist threat level at orange, representing a heightened threat of terrorist activity, because of fears that the war will eventually provoke terrorism.
MI5, the country's domestic intelligence agency, had previously set the country's terrorist threat level at "severe," the second-highest level.
We can't stoop to the terrorists' level, of course.
The Transportation Security Administration decided to drop the nationwide ban on unattended vehicles parking within 300 feet of an airport terminal as long as the terrorist threat level remains at yellow, the middle of the five-color scale developed by the Office of Homeland Security to indicate the risk of a terrorist attack.
Britain's official terrorist threat level is at severe, meaning an attack is highly likely.
The U.S. government did not raise the Homeland Security Advisory System terrorist threat level, orange at the time (high risk of terrorist attacks), following the attack.
Officials at the Department of Homeland Security in Washington said there were no plans to raise the national color-coded terrorist alert level, now set at yellow, reflecting an "elevated" risk.
The police will also deploy up to 12,000 officers on the busiest days of the Games, with the operation being planned on the basis that the terrorist threat level will be set at severe.
Security officials believe the threats in the video issued against the UK show Isis' continued desire to attack Britain and the terrorist threat levels remains at severe, meaning an attack is assessed to be highly likely.
"The terrorist threat level in the UK is already at severe, which is as high as it can go without intelligence of a specific threat.
