His expertise is water research, indicating human odor from under the water. He can give divers a narrower search area.

The centers we chose have a unique blend of expertise as they do research in HPC systems and, in many cases, are closely affiliated with a HPC center, giving them a unique insight from both a scientific and industry perspective on what will actually help solve real problems.

He knows how to ride a chairlift.

It's not a hobby. It's a job.

I work them almost every day, even if it's only five minutes. They want to hunt/work. They need activity every day. If they don't get exercise, they open cupboard doors and get things out or get into the trash.

There is more content in a question than an answer.