One of first-year co-defensive coordinator Nick Holt's top priorities this spring was learning what he had to work with personnel-wise on Purdue's defense.

In 15 practices over six weeks, he got a good gauge on the Boilermakers' ability level, which ultimately affects which defenses Holt will utilize in the fall.

So, in that respect, it was a productive spring.

What else did the unit accomplish? Holt sat down with GoldandBlack.com Thursday morning to provide insight on what he liked, what he didn't and what the keys will be this offseason. Here's an excerpt: