Just before 5 pm Tomball firefighters were responding to an apartment fire on Lawrence Street in Tomball. Reports of fire with injuries. As the 2001 E-1 tower truck that was east bound on SH 99 feeder entered the intersection of Rocky Road and slammed into a Ford F-250 pickup. The driver of the firetruck lost control of the 39 ton truck, went between two traffic control poles and into a field. That is where it rolled over in the soft mud. Four firefighters were in the truck with seat belts and firefighting gear on. All were taken to Tomball Hospital as a precaution. One female firefighter is expected to remain overnight for observation. Two persons were in the pickup and both were transported also. The male passenger is also expected to remain for observation overnight. Harris County Sheriff's Office is investigating the crash. There were no witnesses so they were having to interview those involved at the hospital. The intersection has very limited sight as the overpass for 99 and then a wall of trees along the west side of Rocky to the intersection.