Lt. Jimenez began her service working the middle and high schools as a campus officer. She has worked her way up the ranks where she became the first female supervisor. During her career, Lieutenant Jimenez has served in many facets of the department. In her current role as the Lieutenant of Operations, she oversees the Northeast side of the district. She monitors the day shift patrol and campus operations. She also supervises the “Power Shift Unit” and the “Elementary Rovers.” The Power Shift Unit conducts presentations on various topics to elementary students and the community. They also work as backup units for the patrol division. The Elementary Rovers focus on safe school checks, also conduct presentations and work as back up for campus and patrol. They all work together as a team proving a safe environment for our future leaders.

Lt. Barrera served in various capacities during his 18-year tenure as a Sergeant with the Houston ISD Police Department. He was instrumental in developing the first Gang Intervention Unit of the department. He worked closely with his HPD counterpart in CID and with Mayor's Anti-Gang Office led by Kim Ogg and then Officer Adrian Garcia. These three organizations worked closely to deter gang activity within the HISD schools and communities. They developed a parental education program that was presented at many of the HISD and neighboring school district schools as well as neighborhood civic organizations. The Gang Intervention Unit was extremely effective in identifying and documenting known and suspected gang members within the schools of the HISD. They also provided intervention solutions to the parents of the school age gang members. In 1996 the unit received a Police Chief Commendation from Houston Police Department's Chief Brad Bradford for its contribution in the apprehension of a person selling an inhalant to school age children in the Marshall Middle-Jeff Davis SR area. In 1999, Lt. Barrera developed the HISD Police Mounted Patrol unit. The unit served primarily as a ceremonial unit, however it was trained in securing large outdoor events and in crowd control. In 2000, Lt. Barrera and his mount spent one week in New Orleans training with the renowned New Orleans Police Department Mounted Patrol unit. Lt. Barrera holds a Master Peace Officer Certificate and is a graduate of the prestigious Leadership and Command College. The Leadership and Command College is part the Bill Blackwood Law Enforcement Management Institute of Texas, a state supported entity at the Sam Houston State University. He also holds B.A.A.S Degree from Midwestern State University in Wichita Falls, Texas. He is the proud father of three children and the grandfather to five beautiful grand babies. He believes that it is important that we secure our country's future by educating our children and that this can only be accomplished by providing them with a safe place to learn.