190420-N-IA905-1009 PACIFIC OCEAN (April 20, 2019) Lt. Christopher Tam serves as the tactical action officer during a surface warfare scenario aboard the Independence variant littoral combat ship USS Montgomery (LCS 8) as Lt. Robert Pfeiffer, a warfare tactics instructor from Naval Surface and Mine Warfighting Development Center, provides over-the-shoulder mentoring and training. Montgomery is underway in the eastern Pacific conducting routine training. (U.S. Navy photo by Mass Communication Specialist 2nd Class Morgan K. Nall/Released)