The Montauk Project is considered an outgrowth of the experiments carried out where in 1943?
Philadelphia Experiment The Philadelphia Experiment is an alleged military experiment supposed to have been carried out by the U.S. Navy at the Philadelphia Naval Shipyard in Philadelphia, Pennsylvania, sometime around October 28, 1943. The U.S. Navy destroyer escort  was claimed to have been rendered invisible (or "cloaked") to enemy devices.
Project Nanook Project NANOOK was a Cold War reconnaissance effort of the United States that used the 1st RB-29 missions for mapping and visual reconnaissance in the Arctic and along the Northern Soviet Coast (later missions were Project LEOPARD along the Chukchi Peninsula, then RICKRACK, STONEWORK, and COVERALLS.)