The Oregon Department of Forestry says moderate fire behavior allowed for further progress on the Microwave Tower Fire Tuesday as crews worked to secure more of the fire’s east end with hand line, dozer line, and water drops from helicopters and other air resources.  More accurate mapping has sized the fire at 704 acres  The fire continued to back down on a north facing ridge along I-84 just west of Mosier and will likely do so through today.  Smoke can be observed along the highway.  Last night, crews worked towards hooking in line with hand crews and dozers along the eastern and southern edges of the fire footprint while structural firefighters continued to assess and further secure homes.  The Type 1 Great Basin Team 6 is assuming command of the fire this morning.  The incident command post will be at Hood River Valley High School.  Public information officers with the team will receive inquiries about both the Microwave Tower fire and the nearby Whisky Creek Fire.  Evacuation levels established on Monday night remain in place.  There is an estimate of 100 homes that are under Level 3 evacuations and 500 residences threatened in the Mosier area.  The gymnasium at the Hood River Middle School is a designated Red Cross Shelter for those evacuated.