Army equipment is often highly specialized to begin with, and you don't just "order it" and receive delivery some weeks later as you might with a car purchase. (even one that requires a 'factory order')
Sure enough, the Harper 'fast and furious' approach to military spending is running into exactly the kind of problems you would expect from a poorly planned, rush job.
In addition, documents from National Defence show the government will either have to pay an extra $300-million in "overrun cost" to purchase a fleet of 16 Chinook helicopters, or settle for less equipment.
I wonder what "less equipment" means - removing one of the engines from the Chinooks?