THE BEECH D17 STAGGERWING HAD BEEN ON STATIC DISPLAY DRG A PRE-AIRSHOW ACTIVITY. WHEN THE PLT PREPARED TO DEP, TWR CLRD HIM TO TAXI TO RWY 35R & WARNED, 'CAUTION VEHICLES & PERSONNEL ON THE RAMP.' A WING WALKER ESCORTED THE ACFT OUT OF THE PARKING AREA, THEN WALKED AWAY. THE PLT TURNED LEFT & BGN TAXIING TWD THE SUN AT 'WALKING SPEED' IN AN S-TURN FASHION. THE TWR CTLR TOLD A KING AIR PLT TO HOLD FOR THE D17, THEN HIS ATTN WAS DIVERTED TO OTR ARPT OPNS. SHORTLY THEREAFTER, THE D17'S RGT WING HIT A FIRE TRUCK THAT HAD BEEN STOPPED ON THE TWY; THIS RESULTED IN THE ACFT SWERVING TO THE RGT & THE PROP HITTING THE TRUCK. THE TRUCK DRIVER HAD STOPPED ON THE TWY TO ALLOW A FIREMAN TO TAKE A PHOTOGRAPH OF THE PARKED U.S. NAVY'S BLUE ANGELS. WHEN HE LOOKED IN HIS REARVIEW MIRROR, HE SAW THE D17, BUT NOT IN TIME TO AVOID A COLLISION. THE TWR SUPVR SAID THE ACDNT OCCURRED IN A 'NON-MOVEMENT AREA' & WAS NOT SUBJECT TO GND CTL AS PER LTR OF AGREEMENT BTN THE CTL TWR & THE ARPT AUTHORITY.