Suzanne Collins Iodine Quotations

I carefully lay out the provisions. One thin black sleeping bag that reflects body heat. A pack of crackers. A pack of dried beef strips. A bottle of iodine. A box of wooden matches. A small coil of wire. A pair of sunglasses. And a half-gallon plastic bottle with a cap for carrying water that's bone dry. No water. How hard would it have been for them to fill up the bottle?