The Texas A&M University system fired Jay T. Kimbrough as its deputy chancellor on Thursday, and police officers were called to the system’s headquarters after he pulled out a pocketknife in the presence of the two university lawyers handling his dismissal, The Eagle, a local newspaper, reported. Mr. Kimbrough, a former chief of staff to Gov. Rick Perry, had served as the system’s interim chancellor until a few weeks ago, when John Sharp became chancellor. Mr. Sharp, who was not present during the dismissal, described Mr. Kimbrough’s departure as a reduction in force, saying the deputy chancellor’s position was no longer needed. Mr. Kimbrough told The Eagle that he was being “cynical and comical” when he pulled out his knife, and that he was surprised that anyone felt threatened. A police spokesman said he had cooperated with the officers who arrived. There were no arrests.