This was a gun store before the apocalypse.
Maggie and Tara are on a separate mission to loot a gun store. The door is kicked in and they both agree the chances of leftovers are super slim. There's a noise from inside and they draw their guns. Glenn comes out and admits he tripped over a stack of boxes and mop, and that he found three silencers stashed in a mini-fridge inside. "There's nothing left in this world that isn't hidden," he says, words which stick to Tara.