About 500 members of the Pennsylvania National Guard are preparing for a year long deployment to Poland to take part in North Atlantic Treaty Organization (NATO) exercises. Gov. Tom Wolf and Adjutant General Tony Carrelli took part in send-off ceremonies Saturday in Milton for the members assigned to 3rd Squadron, 27th Armored Cavalry Regiment. The squadron is headquartered in Danville. The unit heads for Texas for a final training exercise and will then deploy to Poland to lead a multinational task force composed of soldiers from the United States, United Kingdom, Croatia and Romania. Members have been preparing for the mission for more than a year.