Mesquite resident Margaret Rodriguez Hafen still remembers the joy on her husband’s face when they learned on Oct. 18 that they were expecting their second child.

Aaron Rodriguez Hernandez and his family had moved from Tampa, Florida, to Mesquite about a year and a half ago, and their first child was born only 10 months earlier, his wife said in a phone interview Tuesday.

“He wanted to tell everybody right away,” Rodriguez Hafen said, adding that after a Tuesday doctor’s appointment, she learned she is only about six weeks into her pregnancy. “He was like, we have to order a sweater for our son that says ‘big brother,’ we have to go over to your parents’ house tonight. He wanted the world to know.”

Five days later, their world changed forever.

Authorities have identified Rodriguez Hernandez as the driver of a 2010 Hyundai Genesis that was struck by a wrong-way driver in a 2015 Nissan Altima early Friday morning while traveling south on Interstate 15 near mile marker 77, near the Valley of Fire area.…