Senior Navy leaders are reviewing an internal plan to design and procure a frigate in the 2019 time frame, a document the service must submit to the defense secretary by May. The draft acquisition strategy framework under review outlines plans for the design and procurement of a modified Littoral Combat Ship, recently re-designated a frigate, Navy spokeswoman Cmdr. Thurraya Kent told InsideDefense.com . Leadership is also assessing a plan for forward- and back-fitting existing and future LCSs with frigate capabilities...