Lions linebacker DeAndre Levy is no stranger to danger in his off-season adventures.  Last year, he went sledding down an active volcano. Two years ago, he swam with great white sharks.  This year he decided to wing walk on a biplane while it was thousands of feet in the air.  There’s a standard clause in player contracts that says players cannot “engage in any activity other than football which may involve a significant risk of personal injury”.  So what did the Detroit Lions have to say about Levy’s daredevil stunt?  “Don’t fall”.