Look around the store for weapons.
From Create Your Own Story
Leslie draws up her knees and tucks her face into them and begins crying. You get to your feet and leave her behind, rushing through the store to the back. There, you find two long rows of ammunition and a case full of pistols and rifles. Surmising that you're not in for long range combat, you pick up a singular pistol, hefting it to feel it's weight. It's a 9mm, and you know enough to be assured that it's a reliable caliber. You rush back down the isles, filling your pockets with as many rounds as you can, and pausing to load the magazine of the weapon. You rack the slide, sending a single round into the chamber. Tucking it into your waistband, you figure that your next move should still be cautious, even if you're armed well now.