Complex sentence: The exhibit also displays the charred three-section Block I hatch from the fire, and a redesigned Block II hatch that flew on all following Apollo missions that could open quicker in the event of an emergency.
Split into simpler sentences: The exhibit also displays the charred three-section Block I hatch from the fire, and a redesigned Block II hatch. The Block II hatch flew on all following Apollo missions that could open quicker in the event of an emergency.