1.   The estuary is now covered by radar from Grangemouth to the Isle of May and Bass Rock and is one of the most sophisticated systems in the United Kingdom.

2.   FAA spokeswoman Arlene Salac said the near-miss last year resulted because the radar did not cover an area it should have.

3.   For example, Unisys estimates it will take about four radars to cover Kennedy Airport.

4.   Oriented toward the south, the radar covers Iran and other Middle Eastern nations.

5.   Thirteen radars will cover Texas.

6.   Oriented to the southeast, the radar covers North Korea, among other Asian nations.

7.   The Virginia radar covers the area ranging from Florida to Venezuela.