The Missile Defense Agency is planning a key developmental test of the Standard Missile-3 Block IIA interceptor this spring ahead of transitioning to production later this year, but how much the new weapons will cost remains an unanswered question. The ship-launched SM-3 Block IIA will conduct a second developmental flight test in the third quarter of fiscal year 2017, according to Rear Adm. Johnny Wolfe, the program executive for Aegis Ballistic Missile Defense at MDA. The upcoming test will follow...