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.
To double-cross is to back-stab and to two-time. Also, double-crossing can be merely 'ratting' someone out. To break a promise in a way that harms the person with whom the deal was originally struck. To double-cross is to back-stab and to two-time. Also, double-crossing can be merely 'ratting' someone out.