Who the fork cares?
My concern would be with the Truck(s): (1) Where the Truck(s) were Specifically located, and (2) Were the Truck(s) still there when the JFK Limo passed by the TSBD? Based on the notes above, It appears the truck(s) were there During the time period the JFK Limo passed by the TSBD. If a Truck is Large enough to run a fork lift into and out of it, it is Large in general. This would mean the roof of the Truck/Trailer would be High Above the ground. Depending on the location of the Truck, this High Ground position on the roof of the Truck/Trailer would be a Prime Sniper Location.