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Scuba Instructor Charged After 12-Year-Old Drowns in Class

2/16/2026

32 3 Full Breakdown

Summary

Story summary

William Armstrong, scuba instructor, faces charges after 12-year-old Dylan Harrison drowned during a class in August 2025.
Armstrong had been awake nearly 30 hours and lacked diving gear when rescue officials arrived.
Harrison's body was found at 45 feet, and her dive watch indicated improper weighting.
Armstrong resigned from the Collin County Sheriff's Office.
The Scuba Ranch cooperates with investigators and supports Harrison's family.

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Story summary

William Armstrong, scuba instructor, faces charges after 12-year-old Dylan Harrison drowned during a class in August 2025.
Armstrong had been awake nearly 30 hours and lacked diving gear when rescue officials arrived.
Harrison's body was found at 45 feet, and her dive watch indicated improper weighting.
Armstrong resigned from the Collin County Sheriff's Office.
The Scuba Ranch cooperates with investigators and supports Harrison's family.