Basically , if one does n't work , you have another one .
According to FAA regulation , all intentional parachute jumps must be made with a single harness , dual parachute system with both a main and a secondary , or reserve , parachute .
If one does n't work , you have another one .
According to FAA regulation , all intentional parachute jumps must be made with a single harness , dual parachute system with both a main and a secondary , or reserve , parachute .