CASTAIC, Calif. (AP) — A midair traffic stop? Almost, as a Los Angeles County Sheriff's helicopter pursued a powered paraglider that had just flown past a jail, raising concern.A member of the sheriff's flight crew recorded on video the brief chase that took place when the man in the paraglider flew near Los Angeles County's Pitchess Detention Center on Monday.Jail deputies saw the fly-by and the helicopter began following him.