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.
Double Insurance. Duplicate protection provided when two companies deal with the same individual and undertake to indemnify that person against the same losses. When an individual has double insurance, he or she has coverage by two different insurance companies upon the identical interest in the identical subject matter. If a Husband and Wife have duplicate medical insurance coverage protecting one another, they would thereby have double insurance.