Look inside how Amazon’s central Pa. warehouses get packages to your door [photos, video] | Local Business

An Amazon package passes through the hands of at least 15 workers on its way to your Central Pennsylvania doorstep.

The precision needed to achieve Amazon’s promised one-day delivery is accomplished through machine learning, or what a spokesperson called “a big brain” that coordinates movement of packages – and humans – from fulfillment center to delivery route. 

Through an escorted tour on Dec. 11, LNP | LancasterOnline tracked the path that packages follow through three types of Amazon facilities during its busiest season when nearly 1,000 extra regional workers are hired. The tour of the local non-unionized facilities took place before a five-day Teamsters strike by workers and drivers at facilities in New York, Atlanta, San Francisco and Skokie, Illinois. Amazon has challenged the warehouse union in court and it does not recognize drivers as part of a union, contending they are independent contractors. The strike ended Dec. 24. 

Employees …