If a choking person becomes unconscious, what steps should be taken to secure them assistance?

Heimlich maneuver: If a person is seen choking and then goes unconscious, the rescuer can assume that the victim cannot breathe because of a foreign object blocking the airway. The rescuer can immediately use the heimlich maneuver to pop the foreign object out of the way. See this link for detailed instructions on adults, infants, and oneself: http://heimlichinstitute.Com/page.Php?Id=34.

Take CPR classes: A little info here would be too dangerous. You need to take a CPR class and they will teach you all you need to know that i can't cover in this space.

911, Heimlich, CPR: If the person is already unconscious, first call 911, then try a heimlich maneuver. If that is unsuccessful, check for a pulse and start cpr. Unless you are a trained medical professional, do not attempt to open an airway of any kind.