Original U.S. Vietnam War Era Operation Igloo White Seismic Sensor ADSID I with Fins & Antenna U.S. Machine Guns enabling the advance to continue

enabling the advance to continue

Late December saw a German counterattack known as the Battle of the Bulge

In about 1960-61

Specification: MIL-P-82106

Original U.S. Vietnam War Era Operation Igloo White Seismic Sensor ADSID I with Fins & Antenna U.S. Machine Guns enabling the advance to continueOriginal Item: Only One Available. Using the cover of darkness, dense jungle and bad weather, North Vietnamese trucks carried critical supplies down the Ho Chi Minh Trail nearly undetected. Since large numbers of American ground troops were not permitted into neutral Laos to stop the trucks, the U. S. Air Force deployed a system of electronic seismic sensor equipment to thwart the enemy's cover and alert U. S. commanders. This highly classified