31. Smoke with a suitable composition can be used as a fire suppression agent. 32. Spectrum Aeronautical will incorporate the PhostrEx fire suppression system into its future aircraft. 33. Once trees are established, fire suppression is practiced in the area. 34. The most common use has traditionally been in fire suppression systems. 35. Pentafluoroethane is also used as a fire suppression agent in fire suppression systems. 36. -- Fire suppression , which prevents natural small-scale fires from clearing brush and downed timber. 37. And a century of fire suppression and logging have radically altered the forest fabric. 38. Now, decades of fire suppression have left forests with hundreds of trees per acre. 39. This year, however, it is too dry to consider anything but immediate fire suppression . 40. "But with fire suppression , you don't get many new trees,"
