This includes operating locomotives on longer and heavier trains during complex situations,

In complex trains of thought signs are indispensable.

I've had a lot of responsibility and dealt with increasingly complex situations,

The applications are no longer bound to the operating system.

There were two locomotives that were carrying 17 cars. The fourth through the 11th cars were derailed, and six of them were turned on their side.

unsustainable situations usually go on longer than most economists think possible. But they always end, and when they do, it's often painful.