Final answer:
Collins dashed back to the dying officer's side because the officer had been wounded and was in need of assistance. Collins likely felt a sense of urgency to help the officer because the officer's injuries were severe and time was of the essence. Collins may have also felt a duty to stay by the officer's side and provide comfort and support in his final moments.
Step-by-step explanation:
Collins dashed back to the dying officer's side because he saw that the officer had been wounded and was in need of assistance. Collins likely felt a sense of urgency to help the officer because the officer's injuries were severe and time was of the essence. Collins may have also felt a duty to stay by the officer's side and provide comfort and support in his final moments.