KREIA IF YOU ORDER DIET COKE: A pointless act of self-flagellation. A 'diet' Coke? Treats are not meant to be healthy. They are meant to be treats. Would you sing a lyricless song? Would you eat a Jogan fruitcake baked without any fruit? You are lying to yourself. You have no self-control. You think you can trick your impulses into making you feel whole.
KREIA IF YOU ORDER COKE ZERO: Always the new-fangled thing. Are you too good for Diet Coke? Too proud for the simplest traditions? What difference does it make. Does it taste more like the real thing? You should have ordered that, then. Do you enjoy the fact that it goes flat faster, perhaps? Have you grown so cruel that you wish to see the life drain out of even the smallest confection? Order the Diet Coke next time, unless you have truly given up on knowing who you were.
In basic they don't let you use contacts, they issue everyone who needs them identical glasses with identical sports straps.
If wartime I would recommend shatterproof eye protection, comes in shaded and unshaded, prescription and non-prescription. There's a reason why "operator" dudes all kind of end up looking the same, it's cuz that's what works.