Your mixing things up.
Yes, as I said, you would undoubtedly be detained, or maybe even arrested. They need to determine who you are, at minimum.
If you are being arrested - for what? Trespass? OK, I am now under arrest for trespass. I am booked somewhere. Wherever. And held. Clock is ticking.
Now what. A prosecutor (very separate from the police) must file a charge (unlikely). If there dumb enough you immediately request a probable cause hearing. No judge would find probable cause. The plane was falling out of the sky. Would be over-turned on appeal if he did.
These are smart busy people. There not going to do this. They have real criminals to contend with.
This thread is crazy.