Launch of the first artificial satellite by the Soviet Union
The Launch of the first navigation satellite otherwise known as Transit IB
First launch of the Block I, first Navigational Global Positioning System
US Air Force signed $1.2 billion for the production of the Block II
First launch of the BLock II, an NGPS
Block II became operational
24th Block II was launched and the constellation was completed
In April, Full Operational Capability status of the system is reached signifying availability of the Precise Positioning Service, PPS.
United States Vice President Al Gore announced plans to upgrade GPS with two new civilian signals to provide enhanced accuracy.