>> what happened in that suv? a stunned diane is rushed to the hospital. coming up -- >> tex was calling her name, and she was kind of breathing panicky. >> he said, there's been an accident. >> tex faces questions from police. >> handling the gun. i didn't realize it was in my lap. i'm going to cry. the love of my life. >> when "dateline" continues. dupixent i can du more... yardwork... teamwork... long walks.... that's how you du more, with dupixent, which helps prevent asthma attacks. dupixent is not for sudden breathing problems. it's an add-on-treatment for specific types of moderate-to-severe asthma that can improve lung function for better breathing in as little as two weeks.