| The largely inconclusive results of the report, which was required by Congress and released Friday by the Office of the Director of National Intelligence, are sure to fuel Americans' long-running interest in what the government calls unidentified aerial phenomena, which have received unprecedented attention in recent years from officials and lawmakers. In almost all of the 144 cases that a team of government experts examined, a lack of data stymied their efforts to say definitively what they were. | 
