Sailors aboard the Oliver Hazard Perry-class guided-missile frigate USS Underwood (FFG 36) fire the 40 mm saluting battery as the ship enters the port of Callao, Peru on May 12, 2012.

Underwood is deployed to Central and South America and the Caribbean in support of Southern Seas 2012.

U.S. Navy photo by Mass Communication Specialist Seaman Frank J. Pikul