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FILE - A helicopter is hoisted by crane from the East River onto a barge in New York on Monday, March 12, 2018. (AP Photo/Mark Lennihan, File)

FILE - A helicopter is hoisted by crane from the East River onto a barge in New York on Monday, March 12, 2018. (AP Photo/Mark Lennihan, File)

FILE - This image from undated video provided by WFAA in Dallas in March 2018, shows Trevor Cadigan, a former WFAA intern and son of WFAA production manager Jerry Cadigan. (WFAA via AP, File)

FILE - This image from undated video provided by WFAA in Dallas in March 2018, shows Trevor Cadigan, a former WFAA intern and son of WFAA production manager Jerry Cadigan. (WFAA via AP, File)