COLUMBIA, Mo. -

It's that time of year again. Health officials are warning people to stay hydrated and know the signs of overheating.

The Salute to Veterans Airshow in Columbia this weekend is just the first of many events that will be outside under the blazing sun this summer.

On Sunday, hundreds gathered at the Columbia Regional Airport for the show. It lasted from 9 a.m. to 3:30 p.m., the hottest part of the day.

Assistant Columbia Fire Chief Matt Hudson was working the medical tent at the event Sunday. Hudson told ABC 17 News there were a few kids who got overheated while running around on the tarmac.

He said he wants to remind anyone who is outside for long periods of time to drink plenty of water, wear a hat to protect from the sun rays and to take breaks in the shade if you can.

Medics say heat-related illnesses, such as dehydration, often come with easy-to-spot symptoms: dizziness or light headedness, fainting, headaches or nausea and vomiting.