Task 2 CHICAGO(AP) Sunday was expected to be the heaviest travel day since Jan. 1, when a congressional order went into effect requiring that every checked bag at more than 400 of the nation’s commercial airports be screened for explosives. Spot checks Sunday at several of the nation’s airport showed no major delays caused by the new security measures. At the international terminal for Northwest Airlines at John F. Kennedy International Airport in New York, passengers waited up to 3- minutes longer than usual while their bags were sent through giant screening machines and workers tore open taped boxes and searched through their contents before closing them up again. Most travelers simply accepted the intensified screening, developed since the terrorist attacks on Sept. 11, 2001, before which only 5 percent of the roughly 2 million bags checked each day were screened for bombs. The federal government put an additional 23000 screeners into airports to carry out the new order. Sonny Salgatar, a 23-year-old college student flying home to San Diego from O’Hare, was told by a screener after the first pass that one of his bags was “hot”, meaning there was something he couldn’t identify and he wanted to open the bag for an inspection. The “hot” item turned out to be Salgatar’s clothing iron. “Listen, anything they want to do for security is Ok with me.”Salgatar said.