How can I fortify my windows and glass doors against predators?

How can I fortify my windows and glass doors against predators?

Chris McGoey (President, McGoey Security Consulting) gives expert video advice on: What changes can I make to the outside of my home to prevent a violent attack by a stranger?; What is the most important thing I can do to prevent predators from entering my home?; Should I keep a gun in my home? and more...