Bald eagles are the apex predators of the skies. Whilst a lot of birds will descend to the land to find something tasty to eat, eagles are big enough just to pick off other birds and take them home for dinner instead. That's exactly what's happening in this picture; it's seen a passing seagull, decided it's just the right size to fill its appetite, and gone in for the kill.
The seagull's luck might be in though; one of its friends has seen that it's in trouble, and it's come to lend a hand. Sadly, we have no idea whether it was successful or not. Given the lack of evidence, we'll just choose to believe that the seagull survived, the eagle was sent packing, and that this was a dramatic tale of risk and rescue in the skies.