(KTLA) – A military celebration marking the Marine Corps' 250th birthday is sparking concern that the showcase could close a portion of the California's 5 Freeway between Orange County and San Diego on Saturday.

Part of the weekend event includes a live-fire amphibious capabilities demonstration at Red Beach, Camp Pendleton, according to a U.S. Marines news release. "The capabilities demonstration will feature integrated Navy and Marine Corps operations across air, land, and sea," the........

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