From what I read elsewhere, synchronization problems between different radar systems and other effects can also cause echoes or "ghosting" to appear, so it's no

From what I read elsewhere, synchronization problems between different radar systems and other effects can also cause echoes or "ghosting" to appear, so it's not uncommon to see more than one trace for a particular object. Depending on the sophistication of the radar system, these traces could be ignored either by software or by operators. When they say they put national security second to investigating the flight, what they're saying is that they're now exposing a lot of information about these radar systems with other countries in order to figure out what happened.