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North Korea launches suspected intermediate-range ballistic missile
The launch was the North's first this year.
Marine Corps seeks lighter .50-caliber ammo for agility in battle
The Corps has asked ammunition vendors whether they could manufacture cartridges 24%-30% lighter than what Marines currently carry.
New ICBM will take US nuclear missiles out of Cold War era
A new nuclear missile is coming, a gigantic ICBM called the Sentinel.
By Tara Copp, AP