SWEET HOME FIREFIGHTERS spray water on a burning 20-foot camp trailer Thursday morning,. Jan. 23. Seven firefighters responded to a report of the fire at 11:07 a.m. with four apparatus and a medic unit to 43091 North River Drive. When they arrived, they found the fire extending into the nearby trees, said Battalion Chief Shannon Pettner. Three-quarters of the roof was gone and contents destroyed. The fire was under control within 15 minutes. The owner said the property was under foreclosure, Pettner said. Upwards of 20 squatters had been staying there, but the property manager had evicted them all in the previous couple of weeks. No one was found inside. The trailer had no power, and the propane tank was empty. The cause and origin of the fire were undetermined. Damage was estimated at $500 for the trailer and $500 for the contents.