Kevin Cox, who received two consecutive life sentences, expressed no remorse.
"Even after I got arrested on this case, I didn't think I'd be here today. I still don't think I should be, so remorse and regret are different things," Cox said in court. "I apologize for what happened to the victims' family. I didn't say I'm sorry I did anything because I still don't feel that I did anything to be here for it."
But when it was his turn, Emrys John turned toward the victims' families to apologize before he was given the death sentence.
"All I can really say is that I'm sorry for everything you've lost. You're right about everything you said, neither one of them deserved anything that happened," John said to the families.
Cox, John and Tyrone Miller were convicted in the killings of Marine Sgt. Jan Pietrzak and his wife, Quiana Jenkins-Pietrzak. They had been bound, gagged and shot to death inside their Winchester home. The house was set on fire to cover up the crime. Prosecutors say robbery was the motive.
The jury convicted John of being the trigger man and Miller of sexually assaulting Quiana. Miller, 25, was sentenced to the death penalty in July.
The young couple's family members gave tearful testimony at Friday's sentencing to illustrate their loss.
"The love I had for her was always in my heart before she was born, and still continues to be in my heart and will always be in my heart the rest of my life," said Glenda Faye Jenkins, mother of Quiana Jenkins-Pietrzak.
At the time of their deaths, the victims had been married three months when their bodies were found inside their home.
"I miss my children so much, I cannot stand it," said Henryka Varga, mother of Jan Pietrzak. "I am choking with grief."
A fourth defendant in the murders, Kesaun Sykes, is being tried separately.