You are working just outside a server room that is being built, and you hear a loud popping sound from inside. As you enter the server room, you notice an electrician lying on the floor with an electrical cord in his hand. What should you do first?

a. Call the building supervisor.
b. Turn off the electrical power at the source.
c. Call 911.
d. Pull the electrician away from the cord.

Answer: b. Turn off the electrical power at the source.