An international panel of two dozen former pilots and government officials called on the U.S. government on Monday to reopen its generation-old UFO investigation as a matter of safety and security given continuing reports about flying discs, glowing spheres and other strange sightings. Especially after the attacks of 9/11, it is no longer satisfactory to ignore radar returns ... which cannot be associated with performances of existing aircraft and helicopters," they said in a statement released at a news conference. The panelists from seven countries, including former senior military officers, said they had each seen a UFO or conducted an official investigation into UFO phenomena. "It's a question of who [are] you going to believe: your lying eyes or the government?" remarked John Callahan, a former Federal Aviation Administration investigator, who said the CIA in 1987 tried to hush up the sighting of a huge lighted ball four times the size of a jumbo jet in Alaska. The panel, organized by a group dedicated to winning credibility for the study of UFOs, urged Washington to resume UFO investigations through the U.S. Air Force or NASA. "It would certainly, I think, take a lot of angst out of this issue," said former Arizona Gov. Fife Symington, who said he was among hundreds who saw a delta-shaped craft with enormous lights silently traverse the sky near Phoenix in 1997.