Thu Hong Nguyen was found guilty Monday of murder and arson in the deaths of Kansas City firefighters John Mesh and Larry Leggio. The 46-year-old lit a fire amid flammable liquids in a storeroom of her nail salon and it destroyed a three-story building in the 2600 block of Independence Boulevard on Oct. 12, 2015. Mesh and Leggio were among more than 100 firefighters sent to battle the three-alarm blaze. The two men were in an alley when the east wall of the building collapsed, burying them in bricks. Two other firefighters were seriously injured. Jackson County Circuit Judge Joel P. Fahnestock found Nguyen guilty of two counts of murder in the second degree, arson in the first degree and two counts of assault in the second degree.