two interesting statements of todays press conference:
1. If FAA/NTSB can positively confirm the unidentified plot on primary radar is MH370 the radar track will be made public on Thursday. Statement of Minister of Defense
2. The plot was according to RMAF chief: unidentified plot on primary radar at FL295, 200nm NW of Penang, at 0215. "We're not saying it's #MH370"
What the NTSB/FAA cannot say is that they can have conversations with classified US military sources that the Malaysians simply cannot have directly, so the FAA can possibly mysteriously verify or discount certain data to a much higher degree of confidence than the Malaysians can, because some classified US system tracked the plane for all or part of its flight path...