Haggard works as a commercial broker and is a small-business owner. He formerly served as the Indiana field representative for the National Rifle Association for six years. Haggard also served in the U.S. Marines as an AV8B Harrier Aviator for 11 years. He was honorably discharged in 2000 and transitioned to the Indiana Air National Guard, serving as an active guard reserve member for 11 more years. Haggard flew the F16 Viper and was commander of Headquarters Detachment One at Camp Atterbury. He retired as a lieutenant colonel in 2013. Haggard is a graduate of Hanover College and Mooresville High School.

Haggard resides in his hometown of Mooresville with his wife, Brooke, and children, Isabella, Eleyna, Aidan and Ian. His memberships include Veterans of Foreign Wars, the American Legion and the NRA.