The USS Harry S. Truman coming 'alongside' the USNS John Lenthall for a fuel replenishment.
Source: http://en.wiktionary.org/wiki/File:US_Navy_030403-N-9964S-023_USS_Harry_S._Truman_(CVN_75)_comes_alongside_the_Military_Sealift_Command_Oiler_USNS_John_Lenthall_(T-AO_189)_for_an_underway_replenishment_(UNREP).jpg
Author: U.S. Navy photo by Photographer’s Mate 3rd Class Christopher B. Stoltz.