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.
The treaty provides that an armed attack against one or more of NATO`s member nations shall be considered an attack against them all.* NATO is headquartered in Brussels, Belgium. The organization was formed in 1949.Many nations joined NATO even Iceland, the only member without a military force.The organization was originally formed out of the fear that the Soviet Union would ally militarily with Eastern European nations, i.e. the Warsaw Pact, and thus become a threat to Western Europe and the United States.owever, at the time of the treaty s signing, the immediate purpose of NATO was to defend its members against a potential threat resulting from the policies and growing military capacity of the Soviet Union. The treaty created a common security system based on a partnership among the 12 countries.