Complex sentence: In early August 2014, "Anchorage" participated in "Underway Recovery Test 2", rehearsing scenarios for recovering an Orion space capsule on December 5,2014 served as the recovery vessel for Orion's Exploration Flight Test 1.
Split into simpler sentences: In early August 2014, "Anchorage" participated in "Underway Recovery Test 2", rehearsing scenarios for recovering an Orion space capsule on December 5,2014. On December 5,2014, "Anchorage" served as the recovery vessel for Orion's Exploration Flight Test 1.