Afloat he has served as the Operations Specialist Chief in USS Mobile Bay (CG 53), homeported in Yokosuka, Japan. After Commissioning, he served as Assistant Operations Officer and Electronic Warfare Officer in USS John S. Mccain (DDG 56), also homeported in Yokosuka, Japan.
Commander Foster's first assignment as department head was pre-commissioning Operations Officer in USS Preble (DDG 88), homeported in San Diego, California. His second department head tour was Operations Officer in USS Vicksburg (CG 69), homeported in Mayport, Florida. During his sea tours, Commander Foster completed multiple deployments to the Western Pacific and Arabian Gulf in support of various multi-national operations.
Ashore Commander Foster served as aide to Commander Navy Installations Command in Washington, D.C.. His next tour was as OPS/Intel analyst at United States Joint Command in Norfolk, Virginia. He also served as the Surface Operations Officer at Commander Fifth Fleet in Manama, Bahrain, and at Commander, Naval Surface Forces Atlantic as a member of the Commander's Action Group.
Commander Foster holds a Masters Degree in Defense Analysis and Information Operations from the Naval Post graduate School in Monterey, California. His personal awards include the Defense Meritorious Service Medal, Meritorious Service Medal (three awards), Navy Commendation Medal (seven awards), and Navy Achievement Medal (four awards) in additions to various service and campaign awards.