E12 and Chief 1A responded with 6 members, 4th due on the box for a house on fire at 10616 Knollwood Court in Waldorf. Units from Waldorf reported fire showing from all 3 floors on all sides with an extensive brush fire in the rear. Chief 3 held the Knollwood Command assigning E12 to cover side C under Chief 3A to extinguish the basement and establish heavy duty operations. E14 and Chief 1B responded with 2 members on the Brush Fire Task Force, and E11 responded with 4 members on the Working Fire Dispatch. E11 assisted in the exposure group. All companies operating for 3 hours. Great Job by all 3 crews!!