The Ringling Bros. and Barnum & Bailey Circus will be at the Verizon Center March 27-30, and you know what that means: it’s time once again for the Elephant Walk. The year’s Elephant Walk, when the circus elephants arrive by train and walk to the Verizon Center, is scheduled to start at 1:30 p.m. on Monday, March 24. The exact start time often varies due to the capricious personalities of the animals, but you can…