Have seen nothing yet. I leave much to those better able to ferret stuff out. I merely have Fox on in the background.
Some planes have web access at each first class seat. Not sure about business and coach.
There should be an FBI or HOMELAND SECURITY number or email to access and it's probably in the longer thread.
But an airliner has more or less constant monitoring at least by some sort of radar or transponder as I understand it. Officials should know virtually instantly if one got blown out of the sky.
Nevertheless, the wife's experience should be reported to Homeland Security, IMHO.
I regret to say I have little further, and interrogating Missus did little more.
She said "Sydney" was mentioned in the thread; whether that was the city, or a screen name, she couldn't recall.
After the Q/A period, I'd would veture this guess: inbound flight might've hit hard turbulence, and the all-hands was put out to get to your seats, return your trays upright, yadayada. I am not thinking this is a detonation scenario.
Cal's thread to the FAA reveals that all West COast terminals are showing green, for normal ops. If there had been an in-flight, the traffic control betwork would be reacting by now.
I'm hoping to hell this is a false alarm.