Lance Cpl . Sara Castromata and Cpl . Jacob Wooley were shot and killed last Monday . Marine base officials believe the National Defense Service Medal , . Castromata shot them before killing himself . The shooting at Nevada follows the deaths of seven Marines in Nevada last Monday . Authorities detail the careers of Wooley , Wooley and Lopez .
Lance Cpl . Sara Castromata and Cpl . Jacob Wooley were shot and killed Thursday . Marine base officials believe Sgt . Eusebio Lopez shot them before killing himself . The shooting at Quantico follows the deaths of seven Marines in Nevada last Monday . Authorities detail the careers of Castromata , Wooley and Lopez .