A 68-year-old Thurston County woman was arrested Wednesday after she allegedly brandished a replica shotgun at firefighters who had responded to a medical alarm at her mobile home. Neither the woman nor the firefighters was injured, and the woman will be booked into the Thurston County jail on suspicion of second-degree assault, said Chief Deputy Brad Watkins of the Thurston County Sheriff’s Office. Deputies responded to the Skookumchuck Mobile Manor on the 21500 block of the Bucoda Highway in south Thurston County just after 2 p.m. Firefighters from Thurston County fire districts 12 and 15 had responded to a medical alarm at the address a few minutes earlier. The woman allegedly pulled out what looked like a shotgun, Watkins said.