US aviation security authorities have relaxed the near-total ban on fluids, allowing airline passengers to carry small amounts of liquid medications onboard airplanes.
At the same time, the head of the US Department of Homeland Security, Michael Chertoff, said Sunday his agency's top priority is finding out whether those accused in the British airline terror plot had any connections to people in the United States.
Chertoff said US officials are concerned that some involved in the alleged plot may still be at large. British authorities have detained 23 people in connection with the failed plot to use liquid explosives to bomb airliners traveling to the United States.
In response, US officials banned most liquids and gels from airliner passenger cabins. In addition to allowing small amounts of liquid medicine, authorities announced that all passengers in the US would have to remove their shoes for screening at security checkpoints.