How to Use "vigilant" with Example Sentences

1. The iraqi military keeps a vigilant eye on the river .
2. People are vigilant on issues that interest them .
3. In beijing , we will be more vigilant than ever .
4. The temptation to surrender control to machines that are smarter , more vigilant and less prone to boredom , irritation and emotional outbursts than people will be overwhelming .
5. Another important aspect of being a good neighbor is to be vigilant .