Fire crews are dealing with a fire that started early this afternoon south of Heritage Landing along the Deschutes River.  Forest Service spokesperson Katie Santini says the fire is estimated to be 300 acres in size.  There are some structures in the area, but Santini indicated they are not immediately threatened by the fire.  Multiple agencies have responded to the fire, and an air attack is underway with two planes and a helicopter involved.  There are also four engines and a hand crew on scene.  The fire is burning in steep ground along a canyon, and high winds are causing issues for firefighters in the effort to bring it under control.