While attending US Armys Airborne School…..
Day before our first jump, the instructors (known as SGT Airbornes,
students are called Ariborne) demonstrated all the possible
malfunctions one might encounter. After watching a total malfunction,
i.e. the parachute fails to deploy, one of the students asked: SGT
Airborne, if we have a complete malfunction, how much time do we have to
deploy our reserve parachutes?

Airborne, you have the REST of your life to deploy that reserve!

Gulp.