(This story was revised to add video.)
Despite cloudy skies over Lakeland, hundreds of pilots were already on the grounds of Lakeland Linder International Airport waiting for the 51st annual Sun ‘n Fun Aerospace Expo .
As the event officially kicks off Tuesday , aviation enthusiasts, history buffs and local residents are invited to stroll among the hundreds of parked planes. Many of the aircraft have a rich history of mixed wartime use followed by personal leisure and sometimes charitable work…