A 40-year-old homeless male is found lying in the street. On physical examination, you notice that the patient has a stab wound to the mid-chest. He is unresponsive and his skin is cool to the touch. His respirations are snoring at 40 per minute and his pulse is 120. Which of the following would the EMT perform first?

A) Apply a sterile dressing to the wound.
B) Start positive pressure ventilations.
C) Perform a jaw-thrust maneuver.
D) Listen to breath sounds.

C