Don’t be alarmed if you see airmen wearing gas masks and chemical warfare gear around the Martin State Air National Guard Base in Middle River. The Airmen of the Maryland Air National Guard’s 175th Wing is participating in “Operation Frosty Strike,” a readiness exercise. “I think the big thing folks in the local area will hear is the giant voice sound yelling out ‘exercise, exercise, exercise’ and they’ll hear sirens and tones, and you might see flashing lights from simulated exercises, with our emergency services,” Major Ben Hughes said.