Assume you are the first officer at the scene of an aggravated robbery at a convenience store. The store clerk states she was held a gunpoint while the robber jumped over the counter and took the money from the drawer. The clerk has an injury to her arm she said happened when the robber jumped over the counter. A witness is standing nearby who states he saw the robber run out the door, jump in a car, and speed away. What are some steps you would take during the next 5 minutes as you wait for backup to arrive?