Rule 4

(Via the Drudge Report)

It's important, people.

A man hunting with his grandson accidentally killed a U.S. Marine due to return to duty this week, after mistaking him for a bear in the Oregon wilderness, authorities said.

Christopher Ochoa, 20, of French Camp, Calif., died at the scene in western Oregon Friday night. He had been hiking with a friend through a field and was wearing dark clothes, according to The Associated Press.

Know your target and what is behind it.