OSLO FJORD (February 12, 2018) A crew member aboard Royal Navy mine countermeasures vessel HMS Cattistock lowers a Seafox remotely operated vehicle (ROV) into the water to investigate a possible mine from World War II in the waters of the Oslo Fjord. Standing NATO Mine Countermeasures Group One (SNMCMG1) ships HMS Cattistock and HNLMS Mercuur are working with Royal Norwegian Navy minesweeper HNoMS Rauma and Royal Norwegian Navy mine hunter HNoMS Måløy to find and neutralize mines from previous conflicts in a Historical Ordnance Disposal operation. NATO photo.