Indications?
What did these people do or not do that resulted in DVT?
Is it simply sitting in the seat for 3+ hours?
Did these guys have symptoms of numbness (a leg falling asleep)?
Does anyone know what symptoms they had after the flight?
Did they have difficulty walking up the jetway?
Or was it something that developed hours after the flight...maybe some kind of discomfort in a leg?
I wonder if there were previous flights where they had similar discomfort which cleared up after a few days? A type of "warning."