Amazon is confident it can deliver your holiday packages in time. It's chartering its own ships and reportedly using half-empty trucks

An Amazon driver carrying packages.Patrick T. FALLON / AFP
Amazon has spent $4 billion to combat shipping delays, according to a Bloomberg report.
Amazon chartered its own ships, built up Amazon Air, and hired 150,000 seasonal workers.
The retailer is one of many to take extra steps to move goods in time for holiday shopping season.
From chartering its own ships to building up its air cargo fleet and adding thousands of seasonal workers, Amazon has been operating in overdrive to make sure it can