What started with tears ended with overjoyed hugs when Steve Kaminski, a security officer at Albany International Airport, spotted a glitter in a checkout bin at the passenger checkpoint. That glint was a missing diamond that had come off an engagement ring whose distraught owner was crying nearby. "I have never in my life been so panicked and upset in an airport, let alone anywhere else in public before," said Kana Chi-Murenbeeld, a Fort Lauderdale, Fla., woman who was traveling through the airport June 4.