ARABIAN GULF (April 21, 2021) The Royal Fleet auxiliary landing ship dock RFA Cardigan Bay (L 3009), left, the Royal Navy minehunter HMS Penzance (M 106), center, the Royal Navy mine counter-measures vessel HMS Brocklesby (M33), right, and the mine countermeasures ship USS Gladiator (MCM 11) operate in formation during exercise Artemis Trident 21 in the Arabian Gulf. Artemis Trident 21 is a multilateral mine countermeasures exercise between the UK, Australia, France and U.S., designed to enhance mutual interoperability and capabilities in mine hunting and clearance, maritime security and dive operations, allowing participating naval forces to effectively develop the necessary skills to address threats to regional security, freedom of navigation and the free flow of commerce. (U.S. Army photo Spc. by Evens Milcette Jr.)