When leaving Community Hall for the first time, Molly calls Astrid on the party line and tells her that something useful is in the trunk of the blue car near the swingset. The car is found on the other end of the main street in Thompson's Crossing. Inside the trunk are several Marine Flares, which may be used to ward off timberwolves.
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Astrid opens the trunk of the car and takes the Marine Flares.
Astrid: "Some more help from Molly. Let's hope these work."