I have no idea, but I CAN tell you, don't expect the Subway in the airport to EVER be open!😳
I regularly travel with my own food (who wants to pay airport prices?) In order to save time make sure it is a solid food (donut fine, fresh coffee not) take the food out of your luggage and place beside your quart size bag of liquid/gels/aerosols. The density of some types of food sometimes shows up as an item worthy of suspicion, so take it out of your bag. Make sure it is a solid food, no jello, pudding, etc... some will allow cream cheese some not. Sandwich, fruit, instant coffee powder is okay just not anything that could be constituted as a liquid/aerosol/gel
For security reasons TSA usually will not allow food brought onboard that originated from outside of airport security.
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