Thomas Rouch was emotional on the stand.

Testifying in his wife's murder trial, Rouch took the stand Wednesday morning.

Arunya Rouch is accused of killing Gregory Janowski after she was fired from the Tarpon Springs store in March 2010. Her lawyers have asserted she snapped after she was teased, called racial names and fired. She was fired after threatening Janowski, officials said.

The shooting happened at the Publix on U.S. Highway 19 near East Tarpon Avenue in Tarpon Springs in 2010. Arunya Rouch, then 41, was charged with first-degree murder.

Previous stories on the Arunya Rouch murder trial

Thomas Rouch said, tearfully at times, that management did not do enough to stop the tragedy.

A Publix employee himself, Thomas Rouch said he asked Janowski to stop bullying his wife at work.

"I said 'Greg, why can’t you leave my wife alone, she's never done anything to you,' " Thomas Rouch said. "He laughed and walked away."

Arunya Rouch, who is not expected to testify, has pleaded not guilty by reason of insanity.

Thomas Rouch said on the day of the shooting, he feared it was Arunya who had been shot.

"All along, in my mind I didn’t believe that," he said. "I thought, not that Greg had shot her...maybe someone came off the street and shot her. I didn't believe it."

Thomas Rouch arrives at the store in time to see his wife airlifted to a hospital after the shooting spree.

"They (management) didn’t call the police, they didn’t call Greg, they didn’t call me," Thomas Rouch said. "They didn’t do anything. As far as I'm concerned, they played Russian Roulette with his life and this is the end result."

Closing arguments may begin today and the jury may have the trial by the end of the week.