WASHINGTON (AP) — The Homeland Security Department is set to announce new security measures Wednesday for international flights bound to the United States, which could lead to a lifting of a ban on laptops and other electronics from passenger cabins from certain airports. The technology is already used for screening checked luggage, but the cost and larger size of the CT scanners has held back their use for carry-on bags. American Airlines, which is participating in the test, said the technology could let passengers leave laptops, liquids and aerosols in their carry-on bags, speeding up the trip through the airport. The test comes as U.S.