Assertion: command | /r/HasProperty | established in the u.s. navy
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text: The Command at Sea insignia was established in the U.S. Navy in 1960 and is for commissioned officers between the ranks of lieutenant (O-3) and captain (O-6) who are in or have been in command of a commissioned warship or submarine, an operational fleet air unit, or a SEAL command at the O-5 or O-6 level.