 Refresher training was completed on 22 April 1966 and "Larson" immediately began a HUKASWEX (Hunter Killer Anti-Submarine Exercise) with ASWGRU (Anti-Submarine Group) FIVE.At the completion of this exercise, "Larson" conducted local operations in preparation for deployment to WESTPAC (Western Pacific).On 9 June 1966, "Larson" deployed to WESTPAC with ASWGRU FIVE.