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.
In reaction to West Germanyâs NATO accession, the Soviet Union and its Eastern European client states formed the Warsaw Pact in 1955. Europe settled into an uneasy stand-off, symbolized by the construction of the Berlin Wall in 1961.ATO endured because while the Soviet Union was no more, the Allianceâs two other original if unspoken mandates still held: to deter the rise of militant nationalism and to provide the foundation of collective security that would encourage democratization and political integration in Europe.