The buildup reflects U.S. concern that the deadly fighting between Hamas and Israel could escalate into a more dangerous regional conflict.
By Tara Copp, AP
The crash occurred on government property east of the air station at 11:54 p.m. local time Thursday.
Some experts say the launch was likely the second test-flight of the developmental Hwasong-18 solid-fuel missile.
North Korea says it successfully test-launched a new intercontinental ballistic missile powered by solid propellants.
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