Every day, not just once a year when the world pauses in solemn silence, Mike Bavis grieves for the piece of himself that he lost when his identical twin brother died aboard United Airlines Flight 175, the second plane hijacked by terrorists and crashed into the World Trade Center. Today, it will be five years since what Mike calls "the accident" took the lives of Mark Bavis, fellow Kings scout Ace Bailey and hundreds of others aboard the four commandeered planes. Because anniversaries are convenient times to reminisce, the day will bring many memorial tributes. Politicians will speak, and tears will be shed.