‘大错误’：美国海军围绕一门发射接近100万美元炮弹的舰艇建造了3艘Zumwalt级驱逐舰。标准北约155毫米炮弹每发约3000美元。海军从未购买过一发炮弹，并已将舰艇上的炮撤除。

PACIFIC OCEAN – Zumwalt-class Guided Missile Destroyer Michael Monsoor (DDG-1001) transits the Pacific Ocean en route to Hawaii for Rim of the Pacific (RIMPAC) 2022. Twenty-six nations, 38 ships, four submarines, more than 170 aircraft and 25,000 personnel are participating in RIMPAC from June 29 to Aug 4 in and around Hawaiian Islands and Southern California. The world’s largest international maritime exercise, RIMPAC provides a unique training opportunity while fostering and sustaining cooperative relationships among participants critical to ensuring the safety of sea lanes and security on the world’s oceans. RIMPAC 2022 is the 28th exercise in the series that began in 1971. (U.S. Navy photo by Mass Communication Specialist 3rd Class Megan Alexander)