Captain Charley L. Diaz (born in 1959 in Corpus Christi, Texas) is a 30-year United States Coast Guard veteran who served on Active Duty from 1982 to 2012. Diaz is best known for leading the crew of the USCGC Sherman (WHEC-720) in the seizure of the Panamanian freighter GATUN off the coast of Panama in March 2007, which netted nearly 20 tons of cocaine worth an estimated $600 million. It was the largest maritime drug bust in US history.