not only what document but what state - most nyc lodi is already reflected in box 1 wages and a code in box 14 has the lodi amount

there are county/village police in NY that don't do it on the w-2 for you and you need them to get you the number of days out as well as the day rate of pay - calculate it and keep a copy of whatever they supply showing the days and back it out of other income with a line of duty non taxable description