My niece completed her undergraduate degree in criminal justice. Throughout her 4 year journey she volunteered with different government institutions and each summer worked at an intern at Georgia Bureau of Investigation as well as a Technical Insights research analyst. She is now a graduate student and is working full time at the sheriff's department as a evidence custodian and as a graduate assistant to her professors. I would recommend getting as much experience and building a network of people that can speak to your skill set along the way. Best of luck to you!