Fort Belvoir FES (E465, E463, E466, T463, BC463) and Fairfax County F&R units responded to a commercial trailer fire Monday, June 7, 2010, at approximately 3:07 p.m. at 5950 9th Street. Firefighters encountered smoke and fire showing upon arrival. Firefighters found the fire located under the trailer and quickly extinguished the fire. The fire was brought under control in approximately 5 minutes. Fire damage was to the exterior by the bottom of the front door. There were no injuries. Damage is estimated unknown. According to fire investigators, the fire is under investigation.