A decorated U.S. Special Forces medic who killed his girlfriend’s husband wants Texas Gov. Greg Abbott to intervene and shorten his six-decade prison sentence, saying that he deserves leniency because he helped put his girlfriend behind bars once he knew she had lied about being abused and “used” him in an elaborate murder-for-hire plot. "I became her weapon," Darrin Lopez, 51, exclusively told NBC’s "Dateline" in his first interview since being sentenced to 62 years in prison for murder.