Now. Sources tell cnn democrats are working on a timetable that would hold public impeachment hearings before thanksgiving, with the final vote to impeach the president perhaps by christmas. Lets begin our coverage with cnns Suzanne Malveaux live on capitol hill. Very potentially damaging testimony coming today from an active military member. Reporter youre absolutely right, john, and potentially explosive. This is a white house expert on ukraine whos going to testify this morning and cnn obtained a bomb shell Opening Statement, a copy of that statement in which he will say that he rang the alarm bells twice to his superiors expressing his concern about the president , about the president s inner circle and inappropriate behavior regarding ukraine. In just hours Lieutenant Colonel Alexander Vindman will appear on capitol hill and tell impeachment investigators he was so troubled by President Trumps july 25th phone call with ukraines president that he reported his concerns to the Nation