21.   New high-tech equipment, including flight simulation and safety alert systems, will be introduced to strengthen pilot training and prevent more accidents, airline officials said.

22.   Nor does it contain a real-time database or automated alert system.

23.   On Sunday, Ridge told governors of his plans for a national alert system and for classifying threats by their seriousness and location.

24.   Scientists created an alert system that used stages and color-coded warnings.

25.   The alert system has five stages.

26.   The alert system is in force immediately for federal agencies, and Ridge is urging state and local governments to adopt it, too.

27.   The group has raised money for emergency alert systems and designed an evacuation plan if fire ever hits the narrow canyon.

28.   The satellite alert system now makes that possible.

29.   The two governments will also work together to develop better virus alert systems.

30.   According to the statement, the money was given under a pollution control and river management programme, with the aim of improving a pollution alert system.