As Texas A&M hosts its annual spring game on Saturday, it’s the first chance for fans to get a real look at the changes new coach Mike Elko has made with the program. It’s the first chance for athletics director Trev Alberts to see it in a game-like setting, too. One thing immediately stood out: Elko’s a defensive guy. “This is a defensive mind and I’ve been to several practices and watched coach Elko, very much involved in the defense,” Alberts said. “And I think one of the things we will have this year is you’re going to have a defense that’s fundamentally sound and gets to the football, and…