2000 m, 4 people, 450 - m s, air, air defense, and, art, autumn, aviation, background, birds, bow, brooch, bud, close up, coffee, cover, crew, cup, day, defense, destruction, drink, fighter jet, flower, flying, focus, fresco, grain, grass, green, ground, ground squirrel, gurevich, height, home, hosting project, installation, land, leaves, meads, mig 17, mikoyan, mugs, nature, on the ground, plant, plants, purposes, range, rodent, self-propelled, sheet, shilka, shoots, sky, snowdrop, speed, spoon, spring, sugar, surface, system, the germ, to 1500 m, to 2500 m, tree, troops, wings, zenith, zsu- 23-4