The crossword solution for the term 'LOCKS HORNS (WITH)' is SPARS, which is an acronym for Simulated Personnel Action Reporting System. SPARS is a computerized system used by the United States Navy to track personnel actions such as promotions, transfers, and awards. It is also used to record disciplinary actions and other personnel-related information. The term 'locks horns (with)' refers to two people or groups engaging in a conflict or disagreement, which is often characterized by a heated exchange of words or arguments.