Excellent service. They always clean things change gloves and work separately from other sandwiches when we go there. Probably not safe for those who are most sensitive, but works well for us.
Wife has eaten here several times and has not yet gotten sick. There is a manager there who goes above and beyond making sure the work area is cleaned and workers are informed about taking precautions to avoid cross contact. Same work space and oven. They use Schar bread that is individually sealed. Since the GF bread is one size they weren't able to do the ring up the kids meal GF.
I love that they offer gluten-free rolls and my favorite is "The Engineer" hoagie sandwich with sautéed mushrooms and onions on top. If you are extremely sensitive, there may be CC issues since they make subs with gluten bread. But I have not had any problems at Firehouse Subs, and have eaten at many different ones, quite a few times.