The job security is not there I don't know what industry you're talking about.

The second your contract you work on is up you better already have another position lined up at your company or else you're getting let go.

It's normal to see companies shrink by thousands of employees when their larger contracts wrap up and the last units are delivered. You'll still make parts for repairs but that production line is getting shut down.

When shuttle ended half the aerospace industry disappeared.

Working in the defense and space industry, every single senior engineer will tell you to make as many connections as you can so that when the program you're on gets cancelled or finishes it's contract you have somewhere else to go.