We can trust our staff
When managing our first large scale pc roll out we used the lessens learned from previous projects. We bought 1000 PC's from a single production run to avoid component changes, perfected our coporate build then had it installed on all the PC's at the factory. The contract stated that we had to receive the PC's in two batches, the supplier retained 500 in a warehouse but we had to receive the first 500 as a single batch to get the lowest price. My request for secure storage (£600) for the £1,500,000 worth of kit was rejected by the property department who suggested the far simpler solution of using office space as storage, but not dedicated lockable office space, literally if you were getting 10 PC's you stored them until just before you were about to be rolled out.
When the guys were completing the install in a large open plan office they got to the bottom row of the pallet and found the 6 CPU boxes were empty.
The same PHB refused my request for a courier service to deliver the PC's to site on the basis the techies were going there anyway and insisted they were transported un-boxed to maximise the use of space in the rented transit. That went well when the two clowns doing the install managed to roll the van.