Security Professional Denise went to the lobby to cover for her coworker who was about to go on a break. Upon arrival, she found her coworker choking and turning blue. Security Professional Denise immediately put her first-aid training to use by performing the Heimlich maneuver to dislodge the obstruction. The victim soon began breathing normally and recovered. Security Professional Denise’s swift response prevented what could have been a more serious incident.