Such tasks include ground maintenance on grades and slopes, digging ditches and trenches, washing buildings using high pressure sprayers, operating tillers to prepare lawns for sod and bedding plants, and cutting trees using axes or chain saws. Located in NJ, only 35 miles from New York City, Picatinny Arsenal is made up of more than 6,000 Soldiers, Sailors, Airmen, Marines, U.S. Federal employees and contractor personnel who lead in the research, development, acquisition and lifecycle management of advanced conventional weapon systems and ammunition.