airlines knew your favorite drink? or kept track of your purchasing habits? that's what some are doing in the name of helping to personalize your trip. the question is, are they crossing a line here? [ paper rustles, outdoor sounds ] ♪ [ male announcer ] laura's heart attack didn't come with a warning. today her doctor has her on a bayer aspirin regimen to help reduce the risk of another one. if you've had a heart attack, be sure to talk to your doctor before you begin an aspirin regimen. ♪ [ male announcer ] 1.21 gigawatts. today, that's easy. ge is revolutionizing power. supercharging turbines with advanced hardware and innovative software. using data predictively to help power entire cities.