IIRC, the Japanese were first interened at Santa Anita Race Track.
I remember as a young man the empty barracks along the freeway between Pleasanton and Livermore CA that was used to house the Japanese during WW2.
First off I can seriously see the requirement of a VERY portable solar charger for your phone, when disaster strikes they may give you a meal, a cot, and water but they don’t want you telling it to the rest of the world.
Speaking of charging a cellphone and power, a charger is drawing less power than a single marker or tailight on a car, we are talking in fractions of a watt.
I bet they are also considering activation of cell phone jammers.
Also Wayside, which is also know as Sheriff Pichess Honor Ranchero.
Now fondly named North County Correctional Center in Santa Clarita Co.