Honolulu firefighters today responded to an emergency call for a hiker who became light-headed while hiking the Diamond Head Summit Trail this afternoon and could not make it back down.

The Honolulu Fire Department received a 911 call at 12:25 p.m. today, and five units with 16 personnel responded, arriving just seven minutes later.

An 18-year-old woman who is a Hawaii resident was hiking up the trail with a companion when she became light-headed and could not continue.

Rescue specialists hiked up the trail and found the patient at 12:44 p.m. The woman tried to stand to see if she could walk back down the trail, but became dizzy seconds later.

HFD placed the patient on a stretcher, and the Air 1 helicopter airlifted her to the landing zone inside Diamond Head crater. The woman was transferred to the care of Emergency Medical Services at 1:02 p.m., but declined medical treatment or transport.

Her companion continued down the trail by foot, escorted by the rescue specialist.

HFD recommends that all hikers bring a fully charged cell phone, with an external battery pack, in case of an emergency, along with snacks and adequate water. Hikers should also know their physical abilities and limitations, and select trails that they can enjoy safely.