U17 was the name of Matthew's fallout shelter. It was located in the desert at the junction of Nevada and California. Fallout shelters in North America were different compared to those in Pan-Asia. Eighty percent of fallout shelters were funded by insurance companies or other financial institutions, as well as built under private names.
For most private fallout shelters, the amount of money spent when subscribing to the eligibility for admission directly determined the quality of life after moving into the fallout shelter. Some private shelters were contracted by large companies and were provided to the company's core employees as employee benefits.
The U17 fallout shelter was the latter.
As the design company of NS-90, the wealthy Masonte Military Industry Group had subscribed for "Doomsday Insurance" for almost every employee, and the nineteen shelters were scattered throughout the Nevada desert.
