HMAS Arunta fires its 5-inch gun as part of a surface firing trial off the coast of Western Australia. The Royal Australian Navy Anzac-class frigate is the first of her class to undergo the Anzac Midlife Capability Assurance Program (AMCAP) upgrade at Henderson, Western Australia as part of Australia’s Warship Asset Management Agreement (WAMA). In March, Arunta fired its first Evolved Sea Sparrow Missile (ESSM) off the coast of Western Australia following the 20-month upgrade.* (Photo:Commonwealth of Australia 2020)