Complex sentence: Instructor Gregory Robertson, seeing her falling to her death, dove toward her, and caught up with her at 3,500 feet, ten seconds from impact; he pulled her rip cord at 2,000 feet, saving her life.
Split into simpler sentences: Instructor Gregory Robertson, seeing her falling to her death, dove toward her, and caught up with her at 3,500 feet, ten seconds from impact. He pulled her rip cord at 2,000 feet, saving her life.