Jeh Johnson is a lawyer and public servant who served as the United States Secretary of Homeland Security from 2013 to 2017 under President Barack Obama.
Veterinarians care for the health of animals and work to improve public health. They diagnose, treat, and research medical conditions and diseases of pets, livestock, and other animals.
Watch Marcia Backstrom, DVM, veterinarian and senior clinician at BluePearl Veterinary Partners in Ann Arbor, Michigan, describe her typical day as an emergency care doctor.
