The woman who said she heard the man talking about Isis is clearly parano.
Some months ago (may) in a plan a woman thought a man was a terrorist because he was wrinting in "arabic" :
"The curly-haired man was, the agent informed him politely, suspected of terrorism.
The curly-haired man laughed.
He laughed because those scribbles weren’t Arabic, or another foreign language, or even some special secret terrorist code. They were math.
Yes,
math. A differential equation, to be exact."
"he —
Guido Menzio — is a young but decorated Ivy League economist. And that he’s best known for his relatively technical work on search theory, which helped earn him a tenured associate professorship at the University of Pennsylvania as well as stints at Princeton and Stanford’s Hoover Institution."
"That’s right: He’s Italian, not Middle Eastern, or whatever heritage usually gets ethnically profiled on flights these days."
https://www.washingtonpost.com/news...d-for-doing-math-on-american-airlines-flight/
No it's not arabic
Also some months ago because a texto in arabic :
"EasyJet have been forced to apologise to a scientist who was hauled off a London-bound flight because a passenger suspected he was an Islamic extremist.
Mr Dewachi says that the airline abandoned him at the airport without a flight and without a phone, leaving him to fork out hundreds of pounds to get back to the UK.
The scientist has lived in Britain for six years, studying for a Master's degree and then a PhD in biochemistry at Sheffield Hallam."
'It transpired a woman passenger had seen me texting my wife in Arabic, my mother language, and for some inexplicable reason suspected I was a terrorist.'
http://www.dailymail.co.uk/news/art...-hauled-London-bound-flight-terror-fears.html
So
@Smart_Guy be careful if you take a plane from now on !