How do you use the word first aid in a sentence?

Here are a few examples of sentences that use the phrase "first aid":

- The camp nurse is trained in first aid and can provide basic medical treatment.

- Before going on a hike, it's important to pack a first aid kit in case of emergencies.

- She quickly administered first aid to the injured child, stopping the bleeding and applying a bandage.

- As a lifeguard, I'm certified in first aid and CPR, and I'm prepared to respond to any medical emergencies that may occur.

- The first aid training I received as a volunteer at the homeless shelter has come in handy on numerous occasions.