Meal more filling than snacks. The type of meal served or eaten at any given time varies by custom and location. In most modern cultures, three main meals are eaten: in the morning, early afternoon, and evening. Further, the names of meals are often interchangeable by custom as well. Some serve dinner as the main meal at midday, with supper as the late afternoon/early evening meal; while others may call their midday meal lunch and their early evening meal supper. Except for "breakfast", these names can vary from region to region or even from family to family. A study in 2016
Meal, Ready-to-Eat began on a dehydrated meal stored in a plastic retort pouch, led by Dr Abdul Rahman (who later received the Meritorious Civilian Service Award for his contribution). It went into special issue starting in 1981 and standard issue in 1986, using a limited menu of twelve entrées. The MRE has been in continuous development since its introduction. In 1990, a Flameless Ration Heater (FRH), a water-activated exothermic reaction product that emits heat, allowed a service member in the field to enjoy a hot meal. In an array of field tests and surveys, service members requested more entrée options and larger