Complex sentence: Restoration of health and revival is mostly done by Jimmy Sullivan or a squad's corpsman, but there are some health packs that can be found in certain areas, these restore the player's health depending on the type of pack found.
Split into simpler sentences: Restoration of health and revival is mostly done by Jimmy Sullivan or a squad's corpsman, but there are some health packs that can be found in certain areas. These restore the player's health depending on the type of pack found.