VANCOUVER – An airline worker who watched Mounties shock Robert Dziekanski with a Taser at Vancouver's airport says she saw the Polish man's skin turn blue and kept waiting for the officers to perform CPR.

But Genevieve Deziel, who works for Horizon Air and is herself certified in the life-saving technique, said the officers did not give the man any first aid as he lay dying on the floor of the airport's international arrivals lounge in the early morning of Oct. 14, 2007

"When I saw Mr. Dziekanski on the ground turning blue then I knew right away that something was wrong and that he needed some help, some CPR," Deziel said Monday at the inquiry into Dziekanski's death.

"Did you see him get any help?" asked Art Vertlieb, lawyer for the inquiry.

"No, I did not," replied Deziel.

The inquiry also heard two differing accounts of whether the officers tried to monitor Dziekanski's condition.

A senior RCMP manager, who happened to be at the airport to pick up a relative, told the inquiry he did see an officer check Dziekanski's heartbeat.

"I thought that while they were standing over him they were trying to feel his pulse," said Robert Jorssen, who is essentially the force's chief financial officer for the western region.

"Twice, I know one on his wrist and one on his neck."

But another Horizon Air employee told the inquiry earlier that she only ever saw one person check Dziekanski's pulse – an unidentified man in dark clothing, not one of the four uniformed RCMP officers.

"I remember at some point, maybe a minute after the other officers had left, someone came over and put their hand on his neck as if to check for a pulse and then walked away," said Alison Kula.

Kula was shown a bystander's video of the incident and she identified the man in the black suit, who is seen putting his hand on Dziekanski while two officers kneel over him.

Kula thought the man only checked for a pulse once, but acknowledged it might have happened more than once.

Less than two weeks after Dziekanski's death, she told police investigators that there was also an RCMP officer kneeling beside Dziekanski and she assumed that he, too, was checking for a heartbeat.

But on Monday, she testified that the officer was kneeling by Dziekanski's legs, and she doesn't think he could have checked for a pulse from that position.

"But thinking back on it, honestly, he would have had to move to check his pulse because there was no way he could reach his pulse point from where he was," she said.

"I never saw him really move."

The issue of whether anyone checked Dziekanski's condition before medical help arrived has become a key question at the inquiry.

A firefighter testified earlier that when he and his crew approached the scene, no one was monitoring Dziekanski. Instead, his hands were still cuffed and officers initially refused to remove the restraints.

The four Mounties will testify in the coming weeks, but one of their lawyers suggested to Kula that she couldn't really know what the officers were doing as they hovered over Dziekanski.

Reg Harris noted that on the video, when the man in the dark suit walks over to Dziekanski, there are actually two officers leaning over the man and another standing close by.

Harris said that one of those officers has his back to the camera, so it's not clear what his hands are doing.

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"So you can't tell us if they're checking for a pulse or if they're checking for breathing?" asked Harris.

"No," replied Kula.

The inquiry is scheduled to run until at least the end of February. After it is finished, inquiry commissioner Thomas Braidwood will issue a report that will make recommendations to avoid any similar deaths in the future and could include findings of misconduct.