(Editor's Note: This story has been updated to reflect statements from the correct Lockheed Martin executive.) The Pentagon is beginning a new weapon system project to defeat hypersonic glide vehicles, briefing industry next week on what is likely a decades-long project to expand the reach of the Ballistic Missile Defense System to counter these ultra-fast, maneuvering menaces that exploit current seams in U.S. defenses. On Dec. 5, the Missile Defense Agency announced in a public notice plans for a...