J.C. Monticone holds up his phone showing a text from his fiancee, who was attending the Route 91 Harvest country music festival in Las Vegas. (Credit: Irfan Khan / Los Angeles Times)

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He was running, lungs burning, across the casino floor of the Luxor — leaving his friends behind in a mad, desperate sprint toward the massacre.

It’s happening again, he thought.

J.C. Monticone had just gotten a text message from his fiancee Sunday night. It was the same two words he’d heard from her on Dec. 2, 2015, when Melissa Castruita was working in San Bernardino at the Inland Regional Center.

“Active shooter,” the text read.

Read the full story on LATimes.com.

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