through gaining control of a situation, either by standing up andfighting or by r

[Ksguo]

The cause of most passenger misbehavior is stress. According to Farrel Kahn, director of Aviation Health Institute. Overcrowding and queuing at the airport raises adrenaline levels. Normally thee levels decrease through gaining control of a situation, either by standing up or fighting or by running. Instead, passengers are kept in cramped conditions on an aircraft, where they have no control. In these circumstances, they wait for one little excuse and then let rip”, says Dr. Kahn. In one recent case a septuagenarian hit a steward after being told that there was no more steak.

How should we understand ‘through gaining control of a situation, either by standing up or fighting or by running’,please?

[Beeesneees]

The usual 3 means of gaining control in such situations are:
1. to stand up
2. to fight (argue)
3. to run (walk away)

The ability to do these things on an aircraft is far more limited.
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Cheers m' dears!

[Ksguo]

I see. Thank you very much！