Military gas mask, tossed down hard.
Baseball impacts the dirt and rolls.
Debris impact. Small pieces drop on metal surface.
Sneaker footsteps jump and land broken windshield
Medium sized passenger jet slow overhead to land and distant reverse thrust
Medium size jet plane, fly over and land
Low pitch tone modulating
Airy low pitched UFO Thrusters Land, Muted
Airy low pitch UFO Thrusters Land, Muted and Hollow, Slow