A quick note for your reference.  I made it through airport security without any hitches.  My lunch box had a salad that I made at home.  It was in a plastic bowl.  I had a small container of hummus (like 3 tbsp worth).  Two small bags (1/2 c) of grapes, a few of my homemade cereal bars, a 100 calorie snack pack and a pita wrap.  You can't use anything to keep your items cool though.
   My trip on Delta was perfect - this time.  The only other thing to note was the fun people watching in the Atlanta airport.  What is up with those 4 or 5 inch high heels ladies?