wake-up call

However, we have just had a necessary wake-up call that all is not as secure as we believed.

For these people the disaster over the Mojave Desert is a sobering wake-up call.

If you want to predict trends in America, whether in politics or products, World Cup mania should serve as a wake-up call.

A new CDC report serves as a wake-up call for the importance of childhood vaccines.

“This study should be a wake-up call to parents and educators everywhere,” says Greenberg.