Stuck in a location for 48 hours

[Heartlander]

Look at the situation in Hong Kong. What if the Airport is under siege for 24 or 48 hours.
How do we get through it?
Water? Food?
Feel free to share your thoughts.

Riot police deployed as Hong Kong protesters target airport

HONG KONG: Hong Kong protesters plan to block one of the world's busiest airports on Saturday (Sep 7) after a night of violence in which police used tear gas and rubber bullets to break up crowds, the latest clashes in 14 weeks of unrest in the Chinese-ruled city.
Hundreds of demonstrators, many masked and dressed in black, attacked metro stations on Kowloon peninsula on Friday night, targeted because of televised scenes of police beating protesters on a metro train on Aug 31 as they cowered on the floor.
Activists tore down signs, broke turnstiles, set fires on the street and daubed graffiti on the walls on Friday.
"The behaviour was outrageous," the government said in a statement.
Police maintained a heavy presence at key bus, ferry and rail terminals across the city on Saturday morning, many already dressed in riot gear and searching mostly young people's bags or checking their IDs.
Some train and bus services to the airport were running a more restricted service in a bid to reduce the likelihood of large numbers of protesters getting to the airport, while officials advised travellers to leave extra time to catch flights.

[Excalibur]

The best measure is not to be there in first place.

Move to a safe enclosed area. Riots most commonly happen outside on the streets, not inside buildings. Just by moving inside a sturdy and controlled building, you can protect yourself from the brunt of a riot. Any building with a basement, or even a sub-basement, can help you hide from a mob. Being in any safe building at all is safer than being out on the streets.
Lock the doors and windows and stay away from them. Though you may be tempted to watch the riot from the windows, this will increase your chances of getting hurt.
Move to rooms that do not lead directly outside, to avoid getting hit by stones, bullets or other missiles.
Look for at least two exits in the building in case you need to leave in a rush.
Just look out for fire. If the angry mob turns toward the building, it can be a target.

[Heartlander]

I am sure we are street smart and avoid such areas.
But sometimes, life is full of surprises, so in the event that the protests move to where you are or where you work.
In such cases, it is best to find a safe way out or take shelter nearby.