This week's Aviation Week & Space Technology has a Point/Counterpoint on the F-35 alternate engine. Here is the intro and links to both of the perspectives.
Development of an F136 alternate engine for the F-35 Joint Strike Fighter is one of the most contentious military issues facing Congress as lawmakers return from their summer recess. The Senate, backed by the Obama administration, voted 59-38 in July to terminate the program, but the House countered by approving $560 million in funding for the alternate. With a showdown looming on Capitol Hill, senior executives from the General Electric/Rolls-Royce team that is developing the F136, and Pratt & Whitney, the contractor on the JSF's F135 incumbent engine, make their cases.
Point: Don't Kill JSF Alternate Engine
Counterpoint: JSF Alternate Engine Does Not Add Up