There is a small population of military retiree “terminal rats” who do nothing more than live at military air terminals and USOs during operating hours between space a flights - occasionally team up to share a room on base between flights. Aka, Space A Bums.
My sister who has been a retired officer now longer than she served knows a former colonel who lives out of his car and drives around the country visiting people. When he comes to see her he stays in a motel. He’s been doing this for more than 20 years. She says she thinks he’s fairly well off.