Crime Alert, I'm Nancy Grace, breaking crime news now.

Employees at Allegiance trucks outside Dallas, Texas.

Trickling in from lunch breaks,

Travis Merrill is waiting for a specific co-worker.

When Tamara Kalazzo returns to her desk, he follows her into her cubicle and opens fire.

Co-workers wrestled the gun away and call 911 but Tamara dies.

Merrill admits he was obsessed with Tamara and killed her because of her excessive

breaks.

Nancy Merrill meticulously kept track of Kalazzo's breaks.

When she caught wind of the behavior,

Kalazzo reported Merrill to HR and he was banned from the office

until he sought counseling.

When Merrill returned to work and Kalazzo refused to interact with him, Merrill became increasingly

angry, purchased several firearms, and began bringing them into the office daily.

Travis Merrill, 51, now charged with murder.

Nathan Lansy has too many drinks at his friend's wedding and angers a guest when he touches

her inappropriately.

Several people chastise him, and he starts yelling. The bride and groom

try to calm him down but he starts yelling again. The bride's father informs him

police will be called if he doesn't leave. He lunges at the dad and other guests quickly try to separate them.

When someone puts their hand over his mouth, he bites down, severing half an inch off

their finger.

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