What should I do if someone is struck by lightning?

According to the National Weather Service:

1. It's safe to touch them. Lightning victims don't carry an electrical charge, and they need immediate medical attention.
2. Call 911 right away, or have someone else call.
3. Give first aid. Cardiac arrest is the immediate cause of death in lightning fatalities, so check whether the person is breathing and has a pulse. Start CPR if needed, use an AED if one is available, and keep monitoring them until help arrives.