Whereas trainees in Phase I are constantly monitored .
Whereas trainees in Phase I are constantly led around by their drill sergeants , Phase III trainees are largely responsible for making sure tasks are completed correctly and on - time and keeping themselves on - schedule .
Whereas trainees in Phase I are constantly monitored and led around by their drill sergeants , Phase III trainees are largely responsible for making sure tasks are completed correctly and on - time and keeping themselves on - schedule .