Heat exhaustion is strongly related to the heat index, which is a measurement of how hot you feel when the effects of relative humidity and air temperature are combined. A relative humidity of 60% or more hampers sweat evaporation, which hinders your body's ability to cool itself.
Statistics (2015) Jacksonville International Airport (IATA: JAX, ICAO: KJAX, FAA LID: JAX) is a civil-military public airport 13 miles (21 km) north of downtown Jacksonville, in Duval County, Florida. It is owned and operated by the Jacksonville Aviation Authority.
Naval Air Station (NAS) Jacksonville. Naval Air Station (NAS) Jacksonville is the biggest Navy base in the south-east region and the third largest in the US. The base received the 2013 Commander, Navy Installations Command Excellence Award for the best large installation in the US.