Bexar County can't keep contraband out of bricks and mortar jail: Would 'tent jail' be secure?

Reacting to news that a Bexar County Jail employee allegedly sold cocaine, marijuana and cell phones to inmates, Sam over at Man O' Law makes an excellent point: If they can't keep drugs and contraband from being smuggled into a jail built of bricks and mortar, what makes the new Sheriff or County Commissioners think they can keep a "tent jail" secure?

As I've written before, there's a reason prisons have walls.