Meaning of CLOSURE in English
In transportation, the process of a unit arriving at a specified location. It begins when the first element arrives at a designated location, e.g., port of entry and/or port of departure, intermediate stops, or final destination, and ends when the last element does likewise. For the purposes of studies and command post exercises, a unit is considered essentially closed after 95 percent of its movement requirements for personnel and equipment are completed.
DOD English dictionary of military terms. Английский словарь военных терминов DOD. 2012