There are mentally ill who refuse to take their medication--this is actually a very common problem with some forms of mental illness.
The mentally ill who refuse to take their meds -- or take too much.
Very common.
Very risky for someone with this history to fly these days.
I support 100% the action of the Air Marshall. I feel sorry for him that he killed someone --but that's what the Air Marshalls are supposed to do. Protect the lives of the passengers.
Wondering if the Air Marshalls on flights into and out of the country of Columbia are experienced -- I should think that might be the case.