Mayor Kirk Caldwell will lead a procession Sunday afternoon for the 8th Annual Mayor's Remembrance Walk.  Local fire, police and other city departments are expected to participate. It begins at 5 p.m. with a blessing, wreath presentation and a bell-ringing ceremony at police headquarters.   The marchers will follow Beretania Street toward the  Fire Department's headquarters on South Street.  The event will conclude with a procession to Honolulu Hale, where the U-S Navy Pacific Fleet Band will perform near the Eternal Flame.