Nope. I found this out at audit. This applies on the assumption he works on one and off two. If he works two in a row, he can take one day but has to have documentation. Day one counts 1/2, day two counts 1/2. This has been many years ago so you may want to look at something more recent.
you can only deduct meals if the fire station has a common mess fund that you are required to contribute to whether you're at the station for every meal or not.