Perris has drawn a crowd of skydivers, amateur and professional, to Perris Valley Skydiving. Parachuting is not always restricted to daytime hours; experienced skydivers sometimes perform night jumps. This form of skydiving involves the skydivers flying in a feet to Earth position. Skydivers are required deploy their main parachute above altitude. This form of skydiving involves the skydivers flying in a head to Earth position. The team consisted of 108 skydivers plus four freefall videographers from 15 countries. Increasing number of skydivers wear cameras, like GoPros, to record their skydives. Most modern parachutes open comfortably, but individual skydivers may prefer harsher deployment. Sport skydivers are always trained to pack their own primary "main" parachutes. Main parachutes used by skydivers today are designed to open softly. Skydivers, who are at altitude only briefly before jumping, do not normally exceed . The six skydivers had already left the aircraft during a demonstration jump. These jumps consist of skydivers leaving the aircraft with some object. This was due to concerns involving skydivers accidentally landing on Naval Submarine Base Kings Bay. Competition speed skydivers fly in the head down position and reach even higher speeds.