U.S. President Donald Trump introduced the latest U.S. Missile Defense Review during a Jan. 17 visit to the Pentagon. The review, which initially was expected to be released in 2017, has been described as a "try everything" approach to expanding the nation's missile defenses. It calls for additional testing of the ground- and ship-based SM-3 Block IIA interceptor (part of the Aegis program) to defend against intercontinental ballistic missiles, evaluating the feasibility of using the F-35 Joint Strike Fighter to track and hunt mobile missile units, exploring the use of directed-energy weapons to destroy missiles during their boost phase with high-energy lasers or high-powered microwaves and expanding the use of sensors in space to detect ballistic missile launches. The new missile defense strategy also seeks a six-month study to examine the use of space-based interceptors....