Meanwhile in related news a United Airlines flight from London to Washington made an emergency landing yesterday after authorities learned one of its passengers was on a U.S. watch list. The passenger turned out to be legendary folk singer and peace activist * Cat Stevens* also known as Yusuf Islam. Upon landing in Maine, the singer was questioned by U.S. authorities and then denied entry to the country on national security grounds. It is unclear why he was considered a threat to national security. The Muslim convert has publicly criticized the Sept. 11 attacks and the recent school siege in Russia that left 300 dead. Last year to protest the Iraq invasion he re-recorded one of his best known songs, Peace Train.