84 months of experience working with end users to troubleshoot both hardware and software issues 60 monthsof experience working in asecond tierhelp desk environment 36 monthsof experience in developing test plans and performing system level testing 36 monthsof experience with public safety mobile computing environments 36 monthsof experience in conducting technical and end-user training in a classroom environment 36 monthsof experience in developing technical and training materials 60 mont