I think in many states the husband at the time of birth is deemed legally the father. No matter of what DNA is. Making the husband responsible for child support. Crazy I know.
I feel like this is an attempt on the part of the state(s) to make sure that someone has a "father figure" to look towards for the support of the child.
Primarily because I feel it's possible that there have been other cases of neglected children, the facts about which people have thought/said "Gee, if only that child had a father listed on their birth certificate, A-B-C could have been avoided."
JMO, IMO, MOO.
Oh i would be certain that this is all in flight attendant training. And probably how to handle OTHER nervous/outspoken/difficult passengers rather than the person in cuffs. He IS in cuffs, so that controls some behavior!
RSBM
Any US LEO can and do travel in commercial airline cabins with weapons if required within the course of their duties.
Since the State of Idaho is now involved through a Governor's extradition request, it's possible that they would foot the bill for transport. They could fly her commercial but she has such a high public profile I wonder if they feel it would be more risky to do that. There's always Con Air I guess. MOO
I once flew with a U.S. Air Marshall across the aisle from me.
It was, IIRC, NYC-Miami; on a little nothing plane with no separate and discrete classes of seating. I knew said person was a Marshall because he was dressed like Hollywood Marshalls (lol); plus when he fit himself into his window seat, I could see the flash of the gun in his holster under his jacket. (Yes, I confess, I did look to see if the person next to him was wearing handcuffs, lol. I'm pretty sure he was not. It's also possible there weren't even 6 seats across in the seating arrangements; so no room for another Marshall on the other side.)
At least post-9/11, my takeaway from this has been that some flights must just old-fashioned have U.S. Marshalls cruising around, either randomly surveilling "just in case", or deadheading to get to another locale. (My "proof" for this; the flight attendant did greet the Marshall with every sign of pleasure and pre-acquaintance, and due to timing I'm pretty sure she had also seen him inadvertently flash his gun, lol.) Also, based upon knowledge and conversations of the doomed flights on 9/11, I'm pretty sure that flight attendants and pilots are pre-briefed when law enforcement/people with gun permits are on their flights, as well as where they will sit; because they might need to communicate/collaborate with said law enforcement official in case of an in-air emergency.
Clearly, I am not a pilot or flight attendant, so IMO, MOO, JMO.