There are times when you should request copies of your records: 1  Permanent Change of Station. 2  Deploying. 3  Retiring.
0. EXPERT ANSWER. Double coincidence of wants refers to a situation in a barter system where the goods or services offered by a seller are exactly the same as that required by a buyer and vice versa.
1 A ghostly double of a living person, especially one that haunts such a person. 2  An evil twin. 3  A remarkably similar double. ( 4 fantasy) A monster that takes the forms of people, usually after killing them. 5  alter ego. 6  evil twin. 7  lookalike.  double.