The fourth clip has just been released for the highly-anticipated action-adventure Battle: Los Angeles, which hits theaters nationwide on March 11. Click on the video player below to watch Aaron Eckhart and his Marines enter the battle site via helicopter, which gives you a greater view of the damage caused by the aliens in this sci-fi action movie.

For years, there have been documented cases of UFO sightings around the world - Buenos Aires, Seoul, France, Germany, China. But in 2011, what were once just sightings will become a terrifying reality when Earth is attacked by unknown forces. As people everywhere watch the world's great cities fall, Los Angeles becomes the last stand for mankind in a battle no one expected. It's up to a Marine staff sergeant (Aaron Eckhart) and his new platoon to draw a line in the sand as they take on an enemy unlike any they've ever encountered before.