The Flameless Ration Heater (FRH) is a water-activated exothermic heating device included with standard military field rations. To activate the heater, service members must add plain water up to the two parallel lines embossed near the bottom of the plastic bag. Adding water past the fill line dilutes the chemical reaction and reduces heat output. The chemical pad contains a mixture of powdered magnesium, iron, and sodium chloride that reacts upon contact with water to generate sufficient steam to warm the meal in approximately twelve minutes.
Statement: According to the passage, adding water above the embossed fill lines on the heater bag decreases its heat output.
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True
The text directly states that adding water past the fill line dilutes the chemical reaction and reduces heat output, making the statement factually accurate.
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