FYI, this recording is from Boca Raton airport in Florida (KBCT). No where near Boca, CA. Actually there is no airport in Boca, CA. The closest airport is Truckee CA (KTRK) and Boca CA is about 5 miles out on a straight in final for runway 20 at KTRK. Maybe they were landing at Truckee or maybe they were landing at an "off airport" location.