This includes collaborating with end users, preparing competitive bid (RFI and RFP) documents, analyzing bids, recommending purchases, participating in pre-production meetings with vendors, factory and acceptance inspections, approving vendor payments, and other responsibilities associated with vehicles or equipment. The agency's network of aviation, ground, rail, and seaport facilities is among the busiest in the country, supports more than 550,000 regional jobs, and generates more than twenty three billion in annual wages and eighty billion in annual economic activity.