After British officials announced they thwarted a terrorist plot, travelers waited on long lines and dealt with new security rules at Stewart International Airport Thursday.

With the threat level upgraded to orange for flights, police, canine units and the bomb squad were visible at the airport. Passengers went through strict security checks, which included disposing of any liquids or gels in carry-on luggage. British officials say the terror suspects were planning to use liquid explosives in a plot to blow up several U.S.-bound planes.

Officials at the airport say travelers should arrive at least two hours early. They also say the heighten alert status will probably remain for a few weeks. To view other security measures click here.

Related Information Foiled terror plot in Britain sparks heightened security at U.S. airports