The Pentagon is accelerating plans for a next-generation missile defense system designed to counter "any foreign aerial attack" on the United States. In a bid to shape its strategy, the Defense Department is reaching out to outside experts for input, including a Feb. 18 industry day aimed at assessing technological capabilities. The effort marks the first step in an expected long-term plan to deploy incremental upgrades every two years, moving toward an “Iron Dome for America.” On Jan. 31, the...