Yes, cabin crew are extensively medically trained to act as first responders in the event of an in-flight emergency. Their training is far more than basic "first aid"; they are certified in Cardiopulmonary Resuscitation (CPR), the use of Automated External Defibrillators (AEDs), and managing common issues like fainting, choking, or diabetic shocks. They are also trained to handle more extreme scenarios, such as emergency childbirth or stabilizing a passenger suffering a heart attack until the plane can make an emergency landing. Cabin crew have access to a "Doctor’s Kit" (Emergency Medical Kit) containing prescription-strength drugs and needles, though this is usually only opened if a licensed medical professional is on board to assist. Every year, crew must pass "recurrent training" to keep their medical certifications valid, as they are essentially the only medical help available at 35,000 feet.