Jack Lay, Henry Lay, Harry Stone and John Fry, student aviators in the Helena school served as mechanics mechanics on the National Reliability tour of airplanes at Great Falls yesterday. Henry Lay flew to Great Falls here with Pilot Sailsbury of Butte and the others, .accompanied by Jack Lay and Margaret Ish drove automobile. Jack Lay served as mechanic on the Whirlwind Stinson plane, Henry Lay on the Lockheed, John Fry the Cuminez Waco and Harry on the Whirlwind Waco, the latter ship leading the national race. "There were 43 ships in Great yesterday," said Jack Lay on his return last evening. "Several t h sand people witnessed the hip aviation aviation show, which is evidence that people of the state are looking favor on aviation and will in time support an aviation factory within Montana." Mr. Lay reports the arc in good condition between the two cities.