Noun
(Canada, Navy) A warrant officer in the Canadian Forces Maritime Command, ranking above petty officer second class and below chief petty officer second class.
(US, Navy) A non-commissioned officer in the United States Navy and United States Coast Guard, ranking above petty officer second class and below chief petty officer.
Source: en.wiktionary.orgLast July, inside a crowded cocktail tent, Navy Petty Officer First Class Justin Sullivan stood under a stage light in his dress whites. Source: Internet
“Our sailors had a very enjoyable visit with the clients and were well received by members of the public who approached us and thanked us for our involvement in their community,” said Petty Officer First Class Stephen Rownd. Source: Internet