Definition: In this task, you are given a text of the article. Your task is to generate a headline (title) for this article.
Input: when rebels raked an army helicopter with machine gun fire this week , bringing it down in flames , they all but dashed hopes for imminent peace talks in a decades-old leftist guerrilla conflict .

peace in colombia seems ever distant after rebels down helicopter eds : UNK previous ; UNK metric conversion in #th graf