The 84th Annual Apple Blossom Festival Fireman's Parade Winchester, Va on 4.29.11 thousand of visitors flock to the annual Fireman's parade which is the Nation Largest Fire apparatus parade ,Crowds were treated to a parade that lasted nearly four hours. Sirens blared during a special section at the end of Friday's Firefighters' Parade, the first time in about 25 years that trucks were allowed to do so.