BOCA CHICA KEY: The NAS Key West Southernmost Air Spectacular air show Saturday and Sunday may cause traffic backups on U.S. 1 around the base at Mile Marker 8, the Sheriff's Office notes.

On both days, the show will start 9 a.m. and end about 3:45 p.m. Traffic may be affected up to an hour before and after.

Drivers may not pull off the highway to watch the show from the shoulder, the Sheriff's Office says. Patrolling deputies will keep traffic moving.