"Underwater Demolition Unit (MYK)" . . . "OYK" . . . "Underwater Demolition Unit" . . . "DYK (Underwater Demolitions Command)" . . . "Underwater Demolition Command" . "DYK" . . . "Hellenic Navy" . . . "1957" . . "Greek OYK Commandos" . . . . . "\u0394.\u03A5.\u039A." . "Underwater Demolition Command (DYK)" . . "Classified" . . . "Underwater Demolition Command" . . . . . . . . . . .