You may be eligible to receive credit for up to three years of active-duty service towards your 20-year retirement with the New York State Police. Step 7: If accepted, the Training Coordinator will notify you and you will receive a letter of confirmation.If you've served in the military, the investigator will request service records. 2. How long does the hiring process generally take? Usually the body alteration form, ensure you have your birth certificate, and police check. One (1) year of security, law enforcement or military experience (preferred). If you want to be a police officer, yes.