Federal agents say they are investigating how a man succeeded in stowing away in a cargo plane on a flight from New York to Dallas by shipping himself in a wooden crate. After hours of traveling, Charles McKinley, 25, of New York City, pried open the crate with a crowbar Saturday morning, authorities said. He popped up outside his parents' doorstep in suburban DeSoto, shook the hand of a shocked deliveryman and walked away, The Dallas Morning News reported Tuesday. The deliveryman called DeSoto police, who arrested him on outstanding Texas warrants. McKinley has not been charged with a crime,...