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?

Probably smack the person who booed, tell them to shut up and to keep your disrespectful mouth shut.

I would simply stand and salute the family. I would stay that way until they disembarked. No words would be needed.

If I had the strength, and were able to serve out the long sentence I would most certainly draw from the judge, I would go "United Airlines" on the person who did the booing.... but that would also dishonor that family... so probably would ignore said "scheissekopf", and salute the fallen.

Simply tell them they are being disrespectful , and to put themselves in the shoes of the Gold Star family. No sense in getting into a shouting match and further degrade the situation

First thing I think I would do is call a bail bondsman because I would probably need one very soon.

Lets just say it would not be a pleasant experience for the BOO'rs and leave it at that. For future evidentiary purposes of course.

My scowl and eyes would Gardner attention

Can not see it happening if it is known what is occurring. If it did I'd scream/yell Shut up and emphasis "They are getting a KIA family member. "

It shows what low life people live in this world hate them all

Has this happened? I don't know what I would do, but it wouldn't be pretty, I can tell you that.