How to spot a false flag

So another school shooting occurred today. This time in Nevada. Read this.
So how cone Obombya hasn’t had a press conference about this?
In the case of sandy hoax and Boston farce and navy yard set up, obombya and his minions of the presstitute have been on TV nationally before events finished unfolding.
In this case nothing.
Could it be that in the 3 examples I listed, the powers that be a forewarned knowledge of the events. They had time to prepare the story, set up the videos. Speeches written in advance.
In this case I had to actively search out the event.
This wasn’t part of the administrations agenda. It’s why only 2 people died.