Donate an unopened 24-pack of bottled water to your nearest Firehouse Subs on Saturday, August 5 and receive a free Medium Sub!
The donated water will go to local fire and police departments to be given to those in need.
There is a limit of one sub per person. According to their website, the H20 for Heroes sub offer is available in all U.S. locations.
See more details and locations on their website.