The Pentagon’s Airborne Laser (ABL) is being prepared for a late July test in which it will attempt to shoot down an ascending target missile from twice the distance of the aircraft’s previous intercept tests, the program’s top official said. Originally conceived as an operational military system that would use a high-power chemical laser to destroy ballistic missiles in the early stages of flight, the ABL platform — only one has been built — has been relegated to the role of technology test-bed. The program is funded by the U.S. Missile Defense Agency (MDA) through September, but its future is...