She was having a medical emergency, and the young man didn't hesitate to help, hopping right out of the window and running to her vehicle.
Quickly, the officer lost consciousness and her foot slipped off of the brake.
"Her kids were screaming, 'Mother, mother, stop it, mother what are you doing?'" Viloria said.
Surveillance video at the restaurant shows the vehicle beginning to roll forward and Viloria jumping into action to pull her from the auto. Viloria saw two children in the back seat.
Viloria knew he had to make a move, so he hopped out the service window in pursuit of the SUV and the stricken driver.
He was working the drive-thru when an off-duty Miami-Dade officer pulled up with her kids.
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According to eyewitness statements, the whole incident could have easily turned into a tragedy if not for Viloria's fast thinking. Luckily, the SUV narrowly missed another vehicle before hitting a curb and coming to a halt. Viloria was ready to hand food to a woman in an SUV, when he noticed she was breathing abnormally.
A statement from McDonald's to CBSMiami said: 'First and foremost, our thoughts and prayers are with the officer and her family during this hard time. An off-duty paramedic in the scene's vicinity also rushed to help - and within minutes, fire rescue was at the scene.
Viloria says the officer was struggling to breathe when he returned to the window with the family's breakfast.
What he didn't know at the time was who he was helping.
The officer's kids were in the vehicle with her. "He is an excellent employee, so it didn't surprise me that he took immediate action and jumped through a window to help save this woman".