Barrett's esophagus refers to an abnormal change in the cells of the lower portion of the esophagus. It is characterized by the replacement of the normal stratified squamous epithelium lining of the esophagus by simple columnar epithelium with goblet cells (which are usually found lower in the gastrointestinal tract).
U.S. Space Camp is a camp and related programs owned and operated by the Alabama Space Science Exhibit Commission's U.S. Space & Rocket Center in Huntsville, Alabama.
The Refugee Camp is a large tent camp on the north-east corner of the map only found in Reimagined. It is replaced by Windy Peaks Campground in Reborn. It is thought that the camp was a settlement for people who tried to escape from the Apocalypse in small groups with the military. This is shown by barricades, barricading the area around the camp.