170928-N-KC128-0064 PEARL HARBOR (Sept. 28, 2017) The Los Angeles-class attack submarine USS Chicago (SSN 721) arrives at its homeport of Joint Base Pearl Harbor-Hickam after completing a change of homeport from Naval Base Guam. Chicago's ability to support a multitude of missions, including anti-submarine warfare, anti-surface ship warfare, strike warfare, surveillance and reconnaissance has made it one of the most capable submarines in the world. (U.S. Navy photo by Mass Communication Specialist 1st Class Daniel Hinton/Released)