One of Long Island's own has become the latest casualty in the War on Terror.
The 24-year-old was originally assigned to the 27th Infantry Brigade Combat Team in Syracuse but he volunteered for a program to serve 3 years on active duty before returning to a local unit.
He was part of the 1st Brigade Combat Team of the 10th Mountain Division when he was killed on June 4.
Theinert, of Sag Harbor, graduated from the State University of New York at Albany in 2008. He is survived by his parents, James Theinert and Chrystyna Kestler, and a brother James.