As heavy thunderstorms rolled through the county, call volume dramatically increased with numerous structure fires beginning to drop. At 15:55hrs Truck 21 was sent to the 19000 block of Travis Cannon Ln in Richmond for the report of 2-houses on fire. Following a 25-minute response, in the driving rain, Truck 21 arrived to find earlier arriving companies making good progress on a heavily involved SFD. After staging momentarily Truck 21 was put to work on the interior. Following completion of assignments Truck 21 and Battalion 21 returned to service, still in the heavy rain, as the call volume continued at a high pace. During this storm, lasting a few hours, the department responded to another 5-box alarm responses in eastern Fort Bend County.