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Nascarella has been identified as "Arthur Valero" on numerous occasions, specifically referring to his time with the NYPD. This Discovery Channel special on Pablo Escobar has Nascarella giving testimony at minute 8:09, and refers to him twice as Arthur Valero:
http://www.youtube.com/watch?v=xbeJKVLBDgQ
Is this name change significant? If so, it should be mentioned in the article.
