What I've learned on the last two courses I've taken (2007 in Canada and 2012 in Australia) is DRSABCD

D - Danger: Check for Dangers
R - Response: Check for Response. If no response then ...
S - Send for Help
A - Airway: Open Airway
B - Breathing: Check if Breathing normally ... if so, leave as is or place in recovery position and monitor vital signs ... if not ...
C - CPR: Compressions (100/minute)
D - Defibrillation: Attach AED and follow prompts