In this Aug. 5, 1964 file photo, Secretary of Defense Robert McNamara indicates on a map where U.S. Navy aircraft made strikes in the Gulf of Tonkin during a Pentagon news conference in Washington "MG42-1" by Phanatic - originally posted to Flickr as Big Gun. Licensed under Creative Commons Attribution-Share Alike 2.0 via Wikimedia Commons Scariest Machine Gun of World War II By TPIntern on October 31, 2014 T&P on Facebook Looking for a great career? Or know another veteran, service member, or military spouse who is? Get started at Hirepurpose. The MG42 machine gun.