How would you react if you were on a flight where a family was boo'd for being allowed off the plane first to receive their soldier's body?

I would ask if they or their family has ever had to go through what this family is going thru. Having a lost a family member in a war is hard enough but having to fly their body home is even harder.

I would end up in jail

I would wind up in jail after I assaulted the people booing closest to me.

That shows how low and disrespectful humans can be. That's totally uncalled for.

Might say something like "Shut the hell up you ungrateful fucks!"
I'm kind of an asshole though so...

I would read him the riot act.

I would apologize for their inconvenience, and then apologize that my fellow soldier fired his weapon one last time so that you guys could boo me without being persecuted .

I would be angry. Likely tears would come to my eyes. Really I find it hard to imagine that this would happen so if it did, I'm not sure what my reaction would be, but I hope that I wouldn't do anything to shame the deceased service-member or their family.

I really can't say what I would do, would not just sit there though... most likely get into trouble though

I would probably be arrested as I would get very ANGRY to anybody who disrespected a family of a fallen Warrior.