The purpose of this manual is to assist you in successfully completing the Orange. County Sheriff's Regional Training Academy.A sick leave letter allows you to formally document your request to take an extended leave of absence from work because of illness. The letter will be fine as long as it says they were positive and are recovered. It does not have to state fit to fly. North Carolina Democrats statewide gains give some hope for the state as should NC Republicans' need to lie and cheat to get votes and win.