Exhaust-Only Ventilation Exhaust-only ventilation is the reverse of supply-only ventilation; stale air leaves the building from a known location (through exhaust fans ducted to the outdoors) and outdoor air enters the building from an unknown location.
In the 1960s, the Soviet Union began to prepare the Warsaw Pact for its internal function of keeping the NSWP member states within the alliance. The Soviet Union took a series of steps to transform the Warsaw Pact into its intra-alliance intervention force.
NATO's purpose, however, has been less clear since the Warsaw Pact and the Soviet Union were dissolved in 1991. Organization. NATO has a civilian branch and a military branch. The civilian branch includes the North Atlantic Council, the highest authority in NATO.n 1955, the Soviet Union and Communist nations of Eastern Europe formed their own military alliance to oppose NATO. The Soviet-led alliance was called the Warsaw Pact. NATO was established not only to discourage Communist aggression but also to keep the peace among former enemies in Western Europe.