United States Navy in the 21st century

Bombing of Iranian nuclear facilities by the United States (2025)

United States missile strike in Syria on April 7, 2017

2023 Houthi attacks on Red Sea

multinational operation against Houthi for engagements with certain commercial ships

2025–2026 US military anti-drug trafficking operation

thumb|upright=1.35|First SOSUS stations Sound Surveillance System (SOSUS) was the original name for a submarine detection system based on passive sonar developed by the United States Navy to track Soviet submarines. The system's true nature was classified with the name and acronym SOSUS classified as well. The unclassified name Project Caesar was used to cover the installation of the system and a cover story developed regarding the shore stations, identified only as a Naval Facility (NAVFAC), being for oceanographic research. The name changed to Integrated Undersea Surveillance System (IUSS) i

2013 incident in Southeast Washington, D.C.

United States Navy attacks on alleged Venezuelan drug vessels under questionable legal grounds

series of videos depicting unknown aerial phenomenon

largest military buildup in the Middle East since the 2003 invasion of Iraq

United States operation in the Caribbean

aviation accident

2001 maritime collision

2015 terrorist attack in Chattanooga, Tennessee

Proposed dock facility to receive aid

1987 Avenger-class mine countermeasures ship

2026 United States military action

2025 American military action

thumb|right|UNITAS emblem

2020 coronavirus pandemic on the aircraft carrier USS Theodore Roosevelt (CVN-71)

Major US Navy interwar fleet exercises, renewed in 21st century

naval dispute

2026 Iran war aerial campaign

Naval incident between Iran and the United States

US missile strikes on al-Qaeda targets in Yemen

series of United States military war games in the Pacific Ocean since 2006