1980 - h.gg ., ah-64, air, air base, air force, airport, alligator, amtsh, and, apache, armored, arms, army, art, battle, bell v-22 osprey, bk 117-c2 ec-145 , black and white, ch-53d, fight, force, helicopter, helicopters, him, intended, ka- 50, ka-52, live, losses, main, marine corps, mechanical, men, mi- 8, middle, miles, military equipment, mountain, night, of the blade, plane, purposes, russia, russia ., sea, shock, single, sky, soviet, stallion, star, switzerland, tank, the carrier, the field, united states, war