NEW YORK--(BUSINESS WIRE)--Kroll Bond Rating Agency (KBRA) has assigned a long-term rating of AA- with a stable outlook to the $176 million Hillsborough County Aviation Authority, Tampa International Airport Revenue Bonds, 2015 Series A (AMT), and long-term rating of A+ with a stable outlook to the $195 million Hillsborough County Aviation Authority, Tampa International Airport Subordinated Revenue Bonds, 2015 Series A (AMT) and Subordinated Revenue Bonds, 2015 Series B (Non-AMT). The ratings a