Two Southwest Airlines planes came dangerously close in Nashville and had to take evasive action

Two Southwest Airlines planes had to take evasive action to avoid colliding Saturday in Nashville, Tennessee, after an air traffic controller directed one pilot to turn into the path of the other plane. Last year, an American Airlines jet collided with an Army Black Hawk helicopter near Washington, D.C., killing all 67 people aboard both aircraft. Midair collisions are rare in commercial flights where the planes are equipped with systems to alert pilots about a potential collision. Most of the c...