English: By 30 September 1971 Sikorsky Aircraft had sent representatives to assist Ft. Benning on the project. The result was the world's most heavily armed helicopter. This CH-34 was armed with two AN-M220 mm machine guns, two .50 caliber AN-M2 aerial machine gun , four .30 caliber AN-M2 aerial machine guns, two pods of twenty 2.75-inch FFAR each, two 5-inch high velocity aerial rockets (HV AR), two additional .30 caliber machine guns in the left side aft windows and one .50 caliber machine gun in the cargo door. Photo 3 shows the cargo door installation of the .50 caliber machine gun.