Complex sentence: Commander, Undersea Surveillance (CUS), head of the IUSS, was elevated to a Navy Echelon IV command on 28 February 2007 at NAS Oceana/Dam Neck Annex, Virginia, operates under the operational guidance of COMPACFLT.
Split into simpler sentences: Commander, Undersea Surveillance (CUS), head of the IUSS, was elevated to a Navy Echelon IV command on 28 February 2007. CUS at NAS Oceana/Dam Neck Annex, Virginia, operates under the operational guidance of COMPACFLT.