Complex sentence: Following an extended trial and shakedown period, REEVES, a guided missile frigate homeported at Long Beach, underwent availability and further training and, on 10 April 1965, departed California for her first tour with the 7th Fleet in the western Pacific.
Split into simpler sentences: Following an extended trial and shakedown period, "Reeves" was homeported at Long Beach where she underwent availability and further training. On 10 April 1965, she departed for her first tour with the 7th Fleet in the western Pacific.