Aviation Standard Test Battery-E (ASTB E) 2025 – 400 Free Practice Questions to Pass the Exam

The term USN stands for the United States Navy. This is the naval warfare service branch of the United States Armed Forces, responsible for ensuring maritime security and conducting naval operations. The United States Navy dates back to the Continental Navy established during the American Revolutionary War, and it operates with the primary mission of defending the nation through the control of oceans and protecting maritime interests. Its significance includes both defensive and offensive capabilities, playing a crucial role in global military operations, international diplomacy, and humanitarian assistance.

The other options, while they may appear plausible, do not correspond to the recognized acronym USN as it pertains to military and naval contexts. United Shipping Network, United Security Nation, and Universal Sea Navigation are not established entities or terms that align with the acronym in common usage. Thus, the selection of United States Navy accurately reflects the intended meaning of USN.