<iframe width="580" height="385" src="https://www.youtube.com/embed/DgAhYYJBfs8" frameborder="0" allowfullscreen></iframe> <br>CNBC's Phil LeBeau reports on how the drop demand for flights has led United Airlines to warn thousands of employees there may be layoffs. Subscribe to ... <br><a href="https://www.youtube.com/watch?v=DgAhYYJBfs8">source</a>