Not long after crews from the DVFD had cleaned up & got apparatus back in service from 2 simultaneous natural cover fires, they were on the street again. And you guessed it another natural cover fire. Brush 730 arrived to find approx. a 1/2 acre burning & being pushed by 20-25 mph winds. Crews held the fire to about 1 acre. Asst. Chief C. Dorey had the IC with all hands working for over 1 hr to control the fire. Units Operating on Scene: Brush 730, Engine 731, Engine 732, Engine 736, DSFP, DSP, DPD