The USS Pioneer, an Avenger-class mine countermeasures ship, and its crew of about 60 arrived Thursday at Ishigaki Island and stayed one night, a spokeswoman from Okinawa prefecture’s Military ...

Meanwhile, the Avenger-class vessels Pioneer (MCM-9) and Chief (MCM-14 ... Earlier, in February 2013, the Navy stationed the minesweeper USS Warrior (MCM 10) in Sasebo to replace USS Guardian ...